NJQT has a stunningly beautiful butt, but so does Tiny Princess (smaller and tighter) and Betsy is amazing too. Don't forget Mikayla and her strawberry coochie, and Hotwetkiss, and Jennuine and the incredibly accurately named "Delicioussugar". There is a wealth of 10 worthy butts on here and I think it makes little sense to compare oranges that taste so good when one can just enjoy whatever comes to hand and be thankful.
I say toss the contest and thank you ladies for sharing. Not into the guy butts sorry so I am not qualified to comment there.