Yes, the B button is more like a gun trigger, but I find it less tedious to push A repeatedly instead of B. I bet they'll have different control options, but even if they don't...I doubt you'll care much after playing for a while.
LEFT4DEAD411.COM
Bet with disolitude: Left4Dead will have a higher Metacritic rating than Project Origin, 3 months after the second game's release. (hasn't been 3 months but it looks like I won :-p )