nice.
the fight went smoothly, just make sure to make it last longer. it was quite short. Let's be honest, SS4 Goku would destroyed super buu. If it had been Super Buu Gohan-absorbed, it might have went like that. That form of super buu wouldn't have stood a chance in hell.
Now, there aren't many things for you to improve on here but here goes. I don't know if you made the super buu sprites, but the color is supposed to be pink, not peach-ish. Can't mark you for that since you probably didn't really make them. The only thing I noticed that you could probably fix is the sound. some places, the sound of the characters was really quiet, some it was loud. try to get a bit of a medium. Using the sounds from the actual show was a good touch though. Keep up the good work man. hope you plan on making more.