I use 3 star Tenten in Kyuubi too but honestly I don't really need her; it's only because I use 10-combos. The initial cooldown is massive, almost makes her not worth it - but 10-combos in general are really good. In Ranked I fought a wind main team around my level that was something like Tenten/GNW Kiba/someone else, maybe Sasuke; I fought it literally a dozen times and maybe beat it three times XD so 10-combo is dangerous. I also like Tenten's 2 person hit in that chase.