It doesn't "fail." Most games don't utilize all 6 cores, so obviously, it won't be the best. So maybe it the i7's beat it by a few fps, but in reality, nobody really cares too much about those few fps. People freak out because they don't see the difference between the fps in those benchmarks, because it could from 0.5-3 fps.
Sorry if it sounds like I'm raging, I'm not really :P.
But as you can see, Crysis here is an exception. I don't think it'll effect too many people, just the dissatisfaction people will get when they benchmark. I personally never thought of the X6 as a gaming CPU anyways. I think I might get it as I render videos a lot and I use Photoshop also.
When you'r new flagship 300$ loses to a 120$ CPU form your competitor by a massive margin, you have failed eppicaly.