This. I have regarded some guys to be good looking, some better looking than me :(, but I've never envisioned myself fucking any guy.
Anyone who claims they can't tell when a guy is good looking is just sexually insecure. There are universally attractive features (clear skin, vibrant eyes, etc.). You can empirically tell if someone is attractive/unattractive. Gay guys can tell if a woman is attractive or not and straight guys can tell if a guy is attractive or not. Acknowledging that someone checks all the necessary boxes doesn't mean you are sexually attracted to them.
I've seen guys who I thought looked like ugly bums, but they had a girl interested in them somehow. It's impossible to tell if a guy is good-looking or not when you're straight.
You know what type of guys are models and celebrities that girls get wet over. Therefore, you know what good looking guys look like
This. You would have to be blind to be unable to see the difference between these two.