It is easier to kill fleets in AA50 as compared to Revised, but that goes both ways for both US and Japan in a US pac strat.
It is possible but, imo, unlikely that the TripleA players have not tried enough US pac strat games, although it happens, but the KGF strat is way more popular, and that is b/c the TripleA players thinks that a US pac strat is ineffective. And that again I think is b/c a US pac strat is not more efficient than a KGF strat, b/c the KGF strat in AA50 is already tried and true.
I still don’t see how it is possible to win more games than 50% with allies, assuming two experienced players play a series of games, and not just one or two games, b/c the dice is more important in AA50 than in Revised, as much can go wrong for axis in the first rnd, but that is (bad) luck, and has nothing to do with good or bad strats.
And I think that since AA50 has been playable on TripleA for almost a year, that different players in the TripleA lobby have tried many different strats for trying and failing just like they did after Revised was available in TripleA, so I doubt that the reason why a US pac strat is hardly used is b/c they can’t master it.
As this is not a scientific question, but a question of faith, I believe that the experienced players in the TripleA lobby have found that in a 1vs1, +NO, no tech setting, that axis are significantly favored, so much that a unit bid of 6-9 ipc is necessary to balance the game, or else, the axis side would win much more than 50% of all games, and so it would not be fun to play w/o a bid, and axis players would have a very hard time with finding opponents.