are peers IMO. If one is stronger, its Conan, but it would be like Cap overhead pressing his listed 800 lbs. and Conan lifting maybe 850 (and I put Buffy somewhere in the 1-4 ton range, hard to pin down, and likely toward the lower end (maybe below) at the beginning and getting more powerful over the course of the show).
Cap is likely a better acrobat, however. They're overall physical peers IMO.
was impressive, but did have several true peers he came across from time to time, and I think that version would be overall inferior to Cap physically.