Don't hold your breath on that one. The new "normal" has changed for consoles. PC's will now always be more powerful at the beginning, middle and end.
Also, i'm curious as to where this narrative comes from that its 'biting Sony/MS in the ass"? Its only certain people even talking about it, let alone complaining. MS has the best sales rate in their entire console history, and Sony is beating out everyone except for the Wii in terms of rate of sale.
Maybe they were only at like 5 million respectively and it was specifically down to "not enough graphics" i'd see your point. But not everyone really cares about this kind of thing and just want to play games, which is what Sony atleast capitalized on fro the beginning.