Board Thread:Theories and Speculation/@comment-30355627-20170210181343/@comment-3965545-20170211004941

Mastery of the technique and precise chakra usage. Same explanation for Kakashi being able to use Kamui better instead of being bed ridden for a week, same explanation of old Hiruzen being able to use the techs he used in his last living fight because he has tech mastery and mastery of precise chakra usage.. and IF Sasuke had so much chakra, then that would mean he has almost as much, or as much as Kaguya herself which he for god damn sure does not. Chakra control, chakra precision, and level of technique mastery are very important.