TEAM GAI! HANDS DOWN! Not just because Lee is my second favourite character. Lets take out the sensei's first.
No one in the opposing teams can match up to Lee's speed. NONE. PLUS he he can open up to 6 gates (7 in the games lol)
Let me write down all the team members. Shino,Kiba,Hinata,Lee,Tenten,Neji,Ino,Shikamaru,Chouji.
Kiba vs Lee vs Chouji.
Winner = Rock Lee. (speed, power, stamina, LOTUS, GATES)
Neji vs Shikamaru vs Shino. Winner = ...errr, this one is a tough one. 3 geniuses. Shika and Shino are EXTREMELY smart--BUT, Neji would knock-out/paralyze Shikamaru while he was thinking and Shino would put up a good fight but Neji would use his Chakra Rotation to kill the bugs and use his 128 palms to get to Shino.
Winner = Neji Hyuga.
Hinata vs Ino vs Tenten. Now THIS one I would wanna see! (3 girl action, anyone?

). Ahem, anyways, seeing how Hinata is the most improved one and her Protection of the Eight Trigrams Sixty-Four Palms can virtually block her from any range attack from Tenten. Ino would use genjutsu but Hinata would strike and knock her out flat before that useless %!&@# can react (no offense

).
Winner = Hinata Hyuga.
FINALS:
Hinata Hyuga vs Neji Hyuga vs Rock Lee!!
Erm...lets not be mean, two guys against one girl is wrong. So in the end, 2 PTS for Team Guy! We still love you Hinata

. (btw Winner = Lee

)
Oh and if the sensei's get involved. Well...lets just say no one can keep up with the youthful sensei
P.S - Let's not forget about Drunken Fist Lee lol