Less literally built and more... trained? And some Robins are definitely better than others.

[Bart's lip curls at the bad guys' reaction to copycats remark. He hadn't thought of that one.]

Yeeeeah. Let's not go there. I don't know about your rogues, Zatanna, but I can tell you the ones in Keystone are secretly big Flash fanboys. The crazy, obsessed, I-want-to-destroy-you-with-my-love-so-I-can-own-you-forever kind.