Actually, GoneAway, Lou does OWN Arnold in the legs, but ONLY in the size of the legs. C'mon now...you don't see that? 
I'm not saying Lou's legs are better, just bigger.
nope, i really dont see it.
lou is standing with his legs further apart than arnold's, which shows off more hamstring deveopment, making lou's left leg appear bigger than arnold's right. it's not a good comparison.
as shown on the leg's which are facing towards the camera, their quads are almost identical in overall size. lou's 'teardrop' is thicker than arnie's, but arnie's vastus lateralis is thicker than lou's. if u really want to see, go in mspaint and draw a line, then compare that line to the width of both their quads which face the camera.