Having witnessed my brunette mom beat a blonde mom in a hairpulling duel (see my avatar by Catzman), I'll have to go with Sharon to win. It won't be an easy win, and the hairpulling battle will see-saw back and forth as first Sharon seems to be coming away with more of Tracy's tresses, then Tracy seems to be carrying off more of Sharon's locks. The more of her hair each woman loses, the more determined she is to win this most primal of all female fights. Eventually, Tracy's scalp can't take any more and she gives in to Sharon, who picks up the longest and thickest bleached blonde tress she can find and walks away with her trophy, proudly swinging it to-and-fro in her right hand. I, too, want a front row seat.