User blog comment:SupremeVegeta15/Ss11 Reviews/@comment-201.170.152.211-20110609034745/@comment-1489276-20110616030855

No, 50/50 wouldn't make sense. Even if they only drained half of his power Buu would still be too powerful and dangerous to keep in hell. They had to transfer almost all of his power to a pure at heart human soul.