And furthermore...
I happened to notice when comparing the performance of a dual to a quad when playing Episode 7, Scene 43 of Bimbo Aliens from Jupiter vs The Mario Brothers that there was AT LEAST a 3.4 nanosecond difference between the two.

As mentioned above, it's all in the software and what it has been optimized for. A five, ten, fifteen, even an thousand benchmark point diff between the two is insignificant when it comes to naked-eye performance when utilizing unoptimized software. Where the quad shines is with optimized programs...it'll run circles around a dual.
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