Obito had controlled 6 bijuus almost perfectly, and had fought BM Naruto, BM Bee, Kakashi and Guy alone. Obito was soloing Naruto, Bee and Guy until Kakashi came. And then he fought against them non-stop, while protecting the Gedo Mazou and still managed to stay alive without help. He controlled the JUUBI with Madara still fine and after that all worn out took a fight against Kakashi while Kurama restored Kakashi's chakra and even ADDED more. And now you say he's stronger than Obito? Wonder how hard he would've gotten r*ped without Bee's, Naruto's And Guys help.