I thought he had like two or three supers.
I know there's one where he just gets like a huge orb of electricity on his hand and takes about 30 seconds to hit you. If you get hit from that, you die (unless this is the one you're talking about X-factoring). But you don't even need to X-factor to prepare for that. If you do enough damage to him, then it'll knock him out of the super.
Then there's the other one or two where he attacks quicker with just a shit ton of beams. The chip damage is pretty large but it won't kill you unless you're somewhat low on health. If that's what you're talking about, then it sounds like X-factor will work. I don't mind sacrificing some HP of someone I don't want to beat the game with in order to use X-factor with someone I do want to beat the game with later.