lol
Those articles linked are at nearing a year old, the x800 is hardly anything new and claiming its superiority over the 6600GT means nothing considering the x800 is a high end stream and the 6600 is a midrange stream.
It's nothing but common knowledge that PS3.0 is a very demanding instruction and even cards like the 6800GT and Ultra may prove futile in games using this instruction. So what do you propose is the solution. PS4.0, an even more demanding instuction that has absolutely no support as of yet! Every new platform introduced is usually rather innefficent until next big breakthroughs occur, and the G70 and r520 will most likely be able to handle PS3.0 with relative ease.
In addition, with dual GPU cards on the horizon, PS3.0 may be threatening to existing cards, but in a year, probably in a few months, it'll be the mainstream platform and cards will be able to handle it.