It honestly annoys me when someone asks a question like this.. It is painfully obvious he is not weak.
Someone that was soloing Naruto, Gai, Bee and Kakashi is weak? Someone with enough power to control 6 paths, which all have Bijuu inside them, all while fighting at the same time is weak? Obito is top three and would stomp Kakashi if he wasn't exhausted.
Naruto BM would also get stomped, without Kakashi and his Kamui backing him up, he simply cannot challenge him at this point in the manga going by feats and common sense.