Ultimate Gohan can beat Kid Buu he cannot, because he held back also if Gohan not held back he can beat Kid Buu, in Dragon BaLL Super Piccolo trying teach Gohan don't held back fight forward push him to the limit. Ultimate Gohan is very strong can beat Kid Buu and Legendary Super Saiyan. Therefore he can beat easy all villain's since now he got Beast Form not sure against Black Frieza form.
