Board Thread:VS Debates/@comment-29933641-20190804063630/@comment-27109830-20191012103743

The problem is, Byleth has only shown that Space Cutting once, and not even in combat. Add on top that Skills cannot be activated thanks to Ike possessing Nihil; which is passive and continuous, and Byleth has little options to fight back. It would've been fine if Byleth was actually stronger, but that is up for debate as Ike fought a deity that possesses enough power to flood almost the entire world (a feat calculated to be Multi-Continent level).

There is one feat in Three Houses that could come close, but that particular feat hasn't been calculated as of yet, leaving the outcome kind of ambiguous, though heavily in Ike's favor.