Do you mean by their looks alone or when they have their tongues/cocks up your ass or kissing your neck and ears or sucking you? In my estimation, I am almost always surprised how blown away by these guys sexual power. And often am often amazed how little younger guys know about how to make love in general. Or even more how clumsy they are in social interaction.
For instance, at the PS Weekend I met an older gentleman who I had not known before but who I just could not shake as being a sexy, sensual person. He just seemed like someone I just wanted to make me very submissive when that is not usually me. So, I would not write "older guys" off as a class.
BTW, this guys strikes me as very hot.