Why can't people with PCs compare graphics chips and people with consoles compare consoles? Why this sudden shift?
i think this generation, for the first time ever open to true comparison. they're running x86 architecture, video cards that have off the shelf type performance and can be challenged on a 1:1 scale by DIY'ers.
for the test itself, i don't think it's going to be competitive within the first year or so of that console being out unless you also count in the cost of savings on software. after that first year (maybe less) though, the pc will quickly outpace the console counterpart.