i kind of think some buff men get more attention than out of shape men. Its not for all men ofcourse, it depends a lot on their personality, but your buddy is right there. Usually physically attractive people get more attention.
I think it is true though.. only because as humans we tend to look for a healthy mate, and when people clearly take care of their selves, it shows that they would probably produce healthy children. And subconsciously, humans look for mating partners. It's the same with men..if you saw an in shape woman beside an out of shape woman, you'd want to give the in shape woman ore attention because she takes care of herself, and that attracts us human beings (unless you're a chubby chaser...)
Maybe he is thinking that men get a better standing in women's minds at least if they have a good body, and you're thinking that he's meaning actual hands on attention. Just a guess about miscommunication or different definitions.
I think what people are saying is true. Sure people that look better get more attention, but how much is dependent on how they act too. You might look good but aren't very approachable. That could be why you don't get how people say they get more attention.