In chapter 2 of PLO From Scratch, Bugs shifts from practical preflop guidelines to a theory-heavy explanation of how and why different PLO starting hands remain playable (or become unplayable) as more money goes into the pot preflop, using flop equity distributions—especially in matchups against AAxx—as the main analytical tool.
Why This Chapter Is Theoretical
Bugs explains that Part 3 grew too large to combine both theory and actionable rules, so he dedicates this chapter to building a conceptual “engine” that will later power practical decisions (3-betting, isolating, overlimping, etc.) in the next part.
The central theme remains consistent with the series: preflop choices should be made with postflop realities in mind, because PLO is primarily decided after the flop.
Flop Equity Distributions: The Core Concept
The chapter introduces flop equity distributions as a way to visualize how a hand’s equity versus another hand is spread across all possible flops. Instead of only asking “What is my overall preflop equity?”, the distribution asks more useful strategic questions like:
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How often do I hit a flop where I can profitably continue?
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When I do hit, how strong am I on average?
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Does my equity come from many moderately good flops, or a few extremely good ones?
Bugs also notes that total preflop equity can be seen as the “area under the curve,” and he shows how you can extract practical numbers from the graph (like the fraction of flops where you reach a required equity threshold). He mentions that some calculations require numerical methods, but readers can use the results without mastering the math.
Turning the Graph Into Decisions
Bugs builds a repeatable process:
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Set a commitment threshold based on pot odds (how much equity you need to stack off on the flop).
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Find how often you reach that threshold (the “top x%” of flops where your equity is high enough).
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Compute your average equity on those flops, not just whether you reached the threshold.
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Combine frequency + payoff to estimate whether putting money in preflop is profitable under a simplified commitment model.
The key strategic insight: as preflop investment increases, it becomes more important that your hand “shows up” on many flops, not just occasionally.
A Simple Playability Model vs AAxx
To make the concept concrete, Bugs models playability for three representative hand types against AAxx, assuming the AAxx player is fully committed and will keep betting/raising to get all-in. The non-AAxx hand follows a simple rule: commit on the flop only when it has at least the minimum equity required by the pot odds of that scenario.
He examines three pot sizes with 100BB stacks:
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Raised pot: small flop pot, high equity threshold to stack off
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3-bet pot: bigger flop pot, lower threshold
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4-bet pot: very large flop pot, much lower threshold (because the pot is already big)
This is not presented as perfect real-world poker, but as a clean way to isolate how hand structure interacts with pot size.
What the Three Hand Types Teach
1) Smooth, “frequent hitter” hands (premium rundowns)
A high-quality double-suited rundown is used to represent hands that connect with many flops through combinations of made hands and strong draws.
Main takeaway: these hands remain playable deeper into bigger pots because they reach “continue” equity often enough. Their equity is spread more evenly across many flops, so they don’t bleed away their preflop investment as often by having to give up on the flop.
This explains why strong rundowns are good candidates for aggressive preflop lines, including 3-betting, even when AAxx is in the opponent’s range.
2) More “either-or” hands with a weak extra card (Broadway wrap style)
A second hand type (an ace-high Broadway-heavy structure) illustrates a pattern where equity is concentrated into fewer flops compared with the premium rundown. Bugs frames this as partly behaving like a “three-card” hand versus AAxx because the ace overlaps with opponent aces in a way that reduces how often the hand produces strong, stack-off-worthy flops.
Main takeaway: it can perform acceptably in smaller pots, but its playability deteriorates rapidly as the pot grows—especially in 4-bet pots at 100BB—because it doesn’t hit enough flops strongly enough to justify the large preflop investment.
So, if you suspect you are facing AAxx and stacks are around 100BB, this type of hand becomes a strong candidate to avoid calling large preflop reraises.
3) Polarized “implied-odds” hands (big pair with poor side cards)
A high pair with unhelpful side cards represents hands that win very big on a small set of flops (notably when they make top set), but have little to work with on most boards.
Main takeaway: these hands can be okay when the preflop pot is small and you’re effectively paying for the chance to hit a huge flop. But they become poor investments as preflop betting escalates, because you still don’t find many more “stack-off” flops, yet you’re risking much more preflop and are forced to give up frequently.
This reinforces the earlier warning from the series: over-inflating pots with one-dimensional hands is a major leak, particularly when the opponent’s range includes AAxx.
The Big Strategic Conclusion: Pot Size Selects Hand Type
From the model, Bugs draws a broad lesson:
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In big preflop pots (3-bet/4-bet), you want hands that hit many flops well enough to continue.
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Hands that hit a small number of flops extremely hard are better when you keep the pot smaller and preserve implied odds.
So “playability” isn’t just about raw equity—it’s about equity distribution and how often you can realize it given the pot size you helped create.
An Important Note About Real-Game Interpretation
Bugs points out that the model calculates EV from the moment the first chip goes in, assuming you already know you’re against AAxx. In practice, you usually don’t know that early, and decisions later in the hand (for example, facing a 4-bet after you’ve already invested) can change what’s correct.
Even so, the model is still very useful for understanding which hand types are structurally suited to escalating preflop action and which are structurally fragile.
Final Observation About AAxx in 4-bet Pots
The chapter closes with a practical implication of the model: in a heads-up 4-bet pot with 100BB stacks, AAxx can often adopt a very simple, forceful strategy postflop because the pot-to-stack ratio is so large that the remaining decision tree collapses. That makes it hard for the opponent to maneuver or “outplay” the aces; the main defense is choosing hands preflop that retain enough playability in that environment.