Everyone seems to be ignoring the right side of the tournament. Shino is not to be underestimated! He did'nt have a chance to demonstrate his true strenght yet, since he faced two weak opponements: one with two broken arms, and Kankuro who was too scared to fight him, made the right decision and gave up. As for Temari, she did'nt have a very tough match, but you could see she was panicking in the end. She's not that strong, and it's impossible that she gets farther than Gaara. So Shino should be able to beat her without any problem at all.

Whoever Shino faces in the finals, will be extremely beaten up from their previous match. There's also a very high chance that it will be a double KO in the naruto vs sasuke/gaara match. Sasuke cant use his curse, or else Kakashi will disqualify him, Naruto cant use his normal chakra because it's been disabled by Neji (unless he somehow recovers for the next match) and his red chakra is not unlimited and will most likely be all used up in his next match, and gaara will take one hell of a beating against sasuke and possibly naruto.

So in short, I beleive Shino shall be victorious.