It's completely in the eye of the beholder you know? If someone is the type of person who quantifies the attractiveness of another with points from 1-10, then, yes, there are always gonna be girls and guys who are "10s" to other girls and guys. If you're purely talking about physical attractiveness that's pretty normal to see someone as or to be seen as a "10". Many if not most everyone in my experience throws the initial 1-10 out when the other person opens their mouth though. For me there have been "perfect 10s" (for the sake of this reply- I don't use numbers in my head to count sexy points) who as soon as they've started to talk completely turn me off. And im not talking about being awkward, I'm talking about being unintelligent, a one-upper, a know it all, too aggressive or a dreary wet blanket to name a few.

On the other hand, my hottest most passionate relationships I've had have sparked where I didn't have any sort of lust at all at the beginning, but when he started talking and seeing the things he was interested in, how he treated others around him, how educated in a wide variety of subjects, it just burned me up with desire.

TL;DR: Yeah there is a "10" for everyone if we all go by what we individually find sexy. A "10" for you might not be a "10" for me. That being said, any deeper interest throws the numerical rating system out the window.