so, real gameplay experience benches have surfaced showing the intel core 2 extreme x6800, intel core 2 duo e6700 & amd fx-62's in action. in a nutshell, not much difference between the 3 cpus, but intel's high end extreme did reign champion.
Intel Core 2 Extreme X6800 = $1k+
Intel Core 2 Duo E6700 = $550
AMD Athlon 64 FX-62 = $1k+
all 3 cpus performed equally in all benches performed w/maybe a 3 fps difference. comparing those prices imo the intel core duo e6700 is the best cpu to date!