SSJ2 Gogeta vs. Buuhan

Fight.

Since the manga is always the primary source, Boohan stomps hard.

Chapter: 503 (DBZ 309), P9.2 Context: as Goku heads to Vegeta with the Potara Boo: “Now there’s another human with great power! But naturally he’s no match for me, even if they merged!”

Also:

Chapter: 503 (DBZ 309), P8.8 Context: Goku tries to get Vegeta to use the Potara with him, but Vegeta refuses Goku: “Knowing you, I thought you might say that…! There ain’t any other way to beat Majin Boo!"

Boohan stomps.

Yeah, Boohan.