I suspect that there are other men who feel this way, but not as many men who'll say so plainly to their sisters.
After almost a year of trying to deny that he looks at any woman who's not his wife, my newlywed kid brother is finally admitting that he looks again. He seems to have two distinct types--small and delicate, and big and bold. He married a big woman. I first told him he didn't know what the hell he wanted, but thought better of it real quick. (Number one, he wants his wife more than anybody else, and we all know it. Number two, who the hell am I to talk about other people's varying types?)
I said he's "like, bi, but with weight, not gender." He died laughing, said he'd tell everybody he was "bi-weightual," and that he'd be with his wife through thick and thin. (And in the cold light of day, wow, it takes so little to make us laugh!) Then he said, seriously, "You know what it is? And don't be offended..."
...which just automatically puts me on the offensive...
"...but it's like, smaller women look good, but bigger women *feel* good." I laughed at him, but it really did make me wonder.