Now that i've actually read the OP, here are my thoughts :
PS3, PS4, X360, X720, PC. Some think that this is ridiculous, i say : what about the five different versions of other games this gen? There's a console version, a portable one and the obscure iOS one.
PS4 and X720 gets 64 max player count? I'm not Jeff Rigby, but can't they do better than that?
Frostbite 2 on next-gen? When DICE has been using different versions of the Frostbite-engine for BC, BC2 and BF4 - why would they use the BF3-engine for their next-gen game BF4? On the PS3 and X360 version - yes, sure.