I think *probably *the answer is Player A for most scenarios, to one degree or another, but to give Player B his due…
– Tournaments will tend to favor B, particularly as the blind:stack ratio increases. When the blinds are high, most (or even all) of the important decisions will be made preflop (when B has a big advantage) or on the flop (when it’s close to even). Even with a rather deep-stacked tourney, I also prefer B’s chances at forcing an advantageous all-in, though I’m rather unsure about this; it would largely depend on…
– … the metagame, which would be fascinating. To what extent could B push A around before the turn, or even the flop? B can make it so expensive for A play his good hands (and he should be constantly jamming the pot for the first two rounds of betting), eventually A has to push back, or at least bluff catch. But it’s a risky, expensive proposition.
– B has a much easier time with hand selection. Anything that isn’t going to *look *threatening on the flop can just be ditched (after a pro forma stab at the pot, at least). A’s advantage in this regard is terribly muted: sure, he can be sure that his AQ is dominating B’s AT, but if B is jamming the pot he has to assume that having a Q kicker won’t be doing him any good.
– A might have to completely forswear raising preflop (I mean, facing a preflop 4-bet shove from B while holding AA, no matter what B has, A is probably forced to fold [excepting possible metagame considerations, but even then it’s extremely risky]). A would do much better in a pot limit game than no limit.
– A has got to get to the turn and river (relatively) cheaply, but if B knows what he’s doing that’s hardly ever going to happen; either he folds easily preflop and A grabs the blinds, or B forces the issue early and A has to decide whether to commit a lot of money before the board is revealed to him.
I don’t know, I’ve kinda talked myself into favoring B, even assuming a cash game with stacks of at least 100 BBs. I think B might well be a favorite in that game. I’d like to try this out. To do it online I think we’d need a referee – could do it live with just two people, however. Next time I visit my father maybe I can get him to indulge me for a couple of hours.