What core games, using modern programming techniques, couldn't be made on Gen 6?

[Twilord]

Darwinianevolution said:
Good question. I suppose that games that recquire a lot of NPCs with decent AI would collapse a 6th gen console after a while

I'm sure  there are tricks for that. Presumably some stuff  from RTS games could help fake it? They tend to have tricks for AI hoards; sorta.