Its that was the So6P do? 1st took control and his wife sealed him......... SO6P subdue'd the juubi not abling to kill it so he sealed it away...... no one can kill a tailed beast only sub due it and seal it. Minato did the same thing yet he lacked a a body strong enougj to handle the kyubi chakra soo he split it in two...... he didn't have to die yea know?You have to define to me your meaning of defeating a Biju.
I define beating a Bijuu what Hashirama did,namely suppress it,tame,conquer it via force and live trough it in the process.That is what i call defeating a bijuu.Or remotely what the 3rd Raikage did,have manly match with a tailed beast like it was one your buddies(damn dat Raikage),and again live trough it.
I don't define beating a bijuu sealing in and dying in the process.
If your definition falls in the 1st category then we have to agree,but if it falls in the 2nd then we have to disagree.