@tormentos: each person has a different set up so making that blanket statement is foolish. Also by launch performance will be much better. Bf3 jump like 20fps when they updated it.
By steam stats most have 560TI which is below PS4 level,you can drop the charade FACT is most PC gamers don't have single 7970 or 680GTX even less SLI setups,most have a GPU from 2011 560TI.
I can't speak for anyone but myself, but as someone who owns the 560ti (albeit one that I've heavily overclocked), I just haven't seen any reason to upgrade. I can generally get a clean 1080p/60fps in the vast majority of games so long as a few extraneous details such as high-level AA and high Ambient Occlusion are toned down. I would assume most people are in the same situation I am in, and won't upgrade until they feel it's necessary. Again, you're acting like it's some huge thing to get to 7970 levels; it's not--it's only $300 and it will only be getting cheaper in the next year or two.