I personally think team Gai will win this. Kakuzu's attacks will only go so far and lee and neji can avoid them and fight them off. the gates is a no brainer, kakuzu has to activate doton;domo himself and they will eventually outlast him and get around it.
let's be honest, any member of team gai can easily solo ino-shika-cho, so that's not a big feat. the big deal was kakashi and ino shika cho was a HINDRANCE, but team gai together as a team is much more useful than just 1 kakashi who has to worry about 3 useless kids. neji, lee and gai's combined efforts considering they're far from useless will probably be able to get the upper hand on them imo.
mind the shift key >=(