Board Thread:Versus Debates/@comment-30426414-20170308222740/@comment-24824859-20170313012909

Lorenzo VonMT wrote: That supports what I'm saying. The rate at which the CT was attracting rubble massively decreased when nagato and sasuke stopped concentrating on the jutsu. Therefore, when sasuke stops concentrating on the jutsu due to naruto's clones distracting him, the original naruto will easily break out because that reduced rate of attraction is not fast enough to keep naruto trapped, the gravitational pull is also weaker when the user stops concentrating. Sasuke has to be actively keeping the jutsu going if he wants to keep naruto trapped.

This is why he had to put the bijuu's under a genjutsu before trapping them because they would break out as soon as sasuke stops concentrating on the CT, i.e when he starts fighting naruto. The rate in which CT attracts rubble stays the same without the user's concentration. The user needs to concentrate if he wishes to increase the gravitational pull or manipulate the planetoids.

He had them on genjutsu because they would break out once CT is complete, which it can do without the user's concentration