The AA thing is really the developer's responsibility though.
I'm thinking the game engine must be rather similar to the original, meaning it's a DirectX 9 deferred renderer which usually means it's impossible to support AA. Somehow NV and ATI hack it in these games sometimes though (usually there are quirks however like blur).
Basically the developer doesn't care about AA and is perhaps using very obsolete technology. And obviously two of the game's platforms can't handle it anyway so why bother I guess. Yippee.