i can tell you right now, attitude and the way you talk etc is more power than looks anyday. i'm not ugly or anything, but im not a model. i put myself maybe a 6/7 and i have a masculine look.
when i was 17-20 i had the most action ever, mainly because i was going to parties every weekend. i use to live with friends and we always had girls coming over and whatever. it was like a hang out place for everyone. very social life back then. now most girls that i met always showed high interest in me and i swear to god, i rarely made moves on girls back then. they would just throw themselves at me. for example, me and friends went to a party and i had four girls interested in me that night. two of them said i was hot, and they BOTH asked for my number. one even stole my number from her friends phone later that week. i made out with two girls that night and slept with one of those two (the owner of the house that the party was at) - i even had two girls on this trampoline poking me and flirting with me.
so i guess my point is, the girls really loved me, not my looks.. they loved my attitude and personality. i came across as a cool guy that everyone loved. i wasn't a crazy party guy or nothing. i was always chilled and laid back. i guess i came off as more mature than the other guys. there are tons of stories like this but you get the idea.
but seriously, i think it's personality/attitude, the way you carry yourself around girls is what gets them off more than looks. the way you look is just a little bonus i guess. don't get me wrong though, if you're butt ugly, it's gonna be a lot harder for you!