Senjutsu says otherwise, nigga.
Nope.Sage is perfect
and the last part of the chapter shows how unperfect obito is
I don't think someone who is perfect would get hit by the same technique, in the same way, so many times. He has been blindsided by a Rasengan twice, already (three times if you count the movie).
He doesn't avoid useless techniques, that wont do anything to him.