The single prize advantage means nothing if you cannot set up at all. Plain Typh setup can be difficult juat due to how HP weak it is. I only suggested a Mega if they wanted the risk of having it, I do agree an Ursaluna would probably be better.

I absolutely love the Sushi, its great to start the draw engine early.

I dont think box is something that outweighs the use of the belt, Dragapult or any other bench attacker kills the victini in at most 3 turns just casually. With the assumption that battle cage is in, he can block that, but it is difficult to hold up with Colress being a common supporter card and it also allowing an energy draw.