One 6970 should be enough to max the game alone, and since there aren't any mods out there yet that will tax your system enough to really warrant that extra 6970 you won't be losing anything. I would disable the crossfire for the meantime.
Hopefully this will get fixed in short order, I plan on adding another GTX 470 and would not be happy with this happening to me as well.
Read the damn first post! Haha. xD
Again. The performance with one OR two cards is more or less the same ~35 fps.
Yes, a single 6970 is struggling with this game on max. And a second makes no difference.
Hate to say it, but you have an ATI card - it's been pretty much a standard policy for their cards to be terrible for new game launches lately. This is probably just another case of ATI blues that will fix itself in the next driver release.
Never have much trouble with them.
I;d rather get some insights or results from other people with comparable hardware, instead of just chalking it up to AMD in the first minute.