Having played a ton of CAP, I can tell you it's all about pre-flop edges. Most players are way too spewy in calling 3bets with 40BB stacks, so there's your main edge in CAP. Limp/3betting from early position works well, eliminating positional disadvantage. Some winning CAP players 3bet virtually anything double-suited, as those hands play well in low SPR, short-handed pots.
LearnedfromTV said in one of his pokersavvy vids that single-raised pots play a lot like 3bet pots and 3bet pots a lot like 4bet pots. That's a great guide-line.
Also, adjusting by opening for half-pot is also recommended, unless you're a huge nit. Huge nits win in CAP too though
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