Suiryu is a very skilled martial artist. Being from a fighting game doesn't automatically just make you skilled in combat lol. Many characters from those games use the same movements over and over again. Which is something Suiryu would definitely be able to pick up on.
After looking through some of her attacks in skillgirls, it appears she is no different. Though she does spam energy projection and shadow clones like I thought.
Yeah, actually, despite his martial arts, a lot of her attacks seem to outrange Suiryu. And while he is skilled enough in martial arts to counter her physical strikes, most of her attacks revolve around using her tendril-like hair as projectiles and turning her limbs into plant-like entities before striking, which is something he's never dealt with before. She has a wide variety of those kinds of attacks, and she continually spams them over and over again, so I don't think he'll get the chance to adapt to them.
Some examples are shown in
this video. I think it'll get overwhelming very fast, even with his skill.
Pay attention to those grab attacks as well. Those are going to be heavy hitters. She has Class T Lifting Strength vs his Class M.
Along with this, she has energy balls that severely outrange him. And the shadow clones to catch him off guard. All of which she spams in battle regularly.
The only times Suiryu will probably have the advantage is when she's throwing physical strikes. He'll have openings to attack her and get the chance to use his skill.
So yeah, voting Fukua.