Varied from guy to guy. Like anything else – some guys were good at it, some guys were bad at it, most were pretty OK. Then, of course, there were the drunken Donkeys – the guys that kiss like a freakin’ mule.
As for the why . . . why not? A man is allowed to have a variety of tastes, is he not?
Brokeback Mountain was a pretty mediocre movie, IMHO. If it had been between a man and a woman, it would have aired midday on some third-rate TV network.
As for most guys and all that . . . since when did demographics and/or statistics have any influence over an individual situation? Outliers are generally expected.