Blog talk:Egyptiansaiyan12/Technical question?/@comment-1725388-20130805182107

If I remember correctly, Lin was referring to Kenshiro's ability to read an opponent's moves after one fight, therefore pitting Kenshiro against Hyoh was worthless as Ken had already fought against Kaioh's Hokuto Ryuken. At which point, Kaioh mentions the Hokuto Souke style.

Suieishin is the move that allows Ken to appropriate his opponent's individual moves, whereas Musou Tensei channels the spirit of the user himself.