So Kakashi has MS and not all paths have all the powers of rinnegan, usually they are distributed among the bodies and it depends upon Tobi how he has customized his 6 paths. Anyway, Kakashi wins...he is better at everything than Yagura except TBM, I suppose...his head would just regenerate. and yagura has sharingan so he'd know what kakashi is doing before he does it.
kakashi needs others to seals them because he's not the only actor, his rules is general and he's in batlefield to fight and protect his teamates,kakashi showed some cool scealing jutsu.Kakashi knows no sealing abilities ,. he needed others to do them.....Yagura is the perfect jinchuriki who can go into full beast mode.... No....kakashi can't even take shukaku
Kakashi showed 1 sealing jutsu that can't really do anything...he sealed sasuke's curse mark.....The fact that he couldn't sealthe people he injured himself, shows he has none..kakashi needs others to seals them because he's not the only actor, his rules is general and he's in batlefield to fight and protect his teamates,kakashi showed some cool scealing jutsu.
nobody can kill a bijuu,the only solution is to seal it.