Because they're idiots. Most likely they just copy pasted from one of their vga charts where they also got this wrong.
NV 3x truely flawed in almost all benchmarx. Then wats the point for arguin wheather its 8x1, or 4x2 or freakin YxZ.
Let it burn.. teh era is over. GET OVER IT!!! ther r a million forums /threads out ther wher people hav argued over this.. wasted thier times. Plz dont start it again!