Bait the flash, Jump the sphere. If you space 2B enough it'll just whiff flash completely, think of it like a game of chicken.
As for neutral he has no real solid answer for in front of him and your normals are much better overall. If you keep them on the defensive they'll crack eventually. Also, you can jump out on a lot of the stuff he does.
So it's in your favor, but don't let him catch as he does big damage.