True, SSj2 Goku > Ultimate Gohan, but even SSj3 Gotenks was stronger than Gohan in that movie. The movie seemed to reverse the standings somewhat.
Manga
U. Gohan > SSj3 Gotenks > SSj3 Goku > SSj2 Goku = Vegeta
M13
SSj3 Goku > SSj2 Vegeta > SSj2 Goku > SSj3 Gotenks > U. Gohan