its been shown in the show that dean gets more girls.
Sammy could get more if he wanted to I'm sure! maybe sometimes a different kinda girl though lol.

I only picked Dean cuz we all know that he always gets the girl. Plus, Sammy is kinda shy, so girls don't usually notice him- well, except for Samgirls like me. :P

But Sammy should be the one to get the girls!

Dean gives off the bad boy vibe that draws girls in....and then he has that sweet sensitive side thats hidden behind his sarcasm which is just so cute. :D