I had people bring a 360 and a PS3 and we compared the same game side by side...
same graphics on both, but on the PS3, framerates were always constant... 360 was choppy. (don't start a flame war... i'm just ADD)
no specifics = worthless generalization
I compared two cars that both had the same tires one time, and one was faster than the other.
Details or go take your Ritalin.