Concerning nairb247's wonderful statistics of the number of men/women in the final three, as even as it sounds with six all male teams and six couple teams, if you add the fourth place team, you happen to get four more all male teams added.
Season One - Kevin/Drew
Season Two - Oswald/Danny
Season Three - Derek/Drew
Season Four - Jon/Al
Season Five - Gawd, I hope Lance/Marshall don't make it this far.
The point? Nothing other than to showcase that as a whole, spanning all the seasons, the all male teams do fare better than the couple teams and all female teams.
P.S. - Season two had 3 all female teams. Hillary/Deidre, Peggy/Claire, Mary/Peach