Board Thread:Versus Debates/@comment-36394790-20180824122210/@comment-36699565-20180824184730

It fully absorbed all of the Biju chakra in an instant, but couldn't absorb Sasuke's even though he came so close to it, after it finished absorbing the former's chakras.

MS bestow potent genjutsu, which lets you manipulate tailed beasts, even Perfect Jinchuurikis. SM enhances physical stats and bestows sensing, which isn't remotely close to MS boosts.