Originally Posted by
PVC
I was simply taking your earlier statements to their logical extreme. I guess it was too extreme in this case, since, as you said, it's comparing apples to oranges. I fucked up. I take it back.
I'm still thinking that differences would exist, but that they'd be small. Probably only a couple of pounds difference, since with curls the biceps aren't capable of moving a hell of a lot of weight in the first place, and with chinups the biceps aren't the only muscles involved, nor are they the most important. So yeah, from a training perspective the issue is almost irrelevant since these are only assistance exercises. But I would think it is incorrect to state that there is literally no difference.
Of course, I haven't tested this, and I don't plan on doing curls any time soon (or ever). If someone else wants to test this I would be open to their results.