Evil Buu vs;
Gotenks Post-RoSat = Highly unlikely since Buu just stood there and Gotenks attacks has absolutely no effect on him. There is no reason for Buu to power up and no signs of any visual or verbal increase. Plus the most important thing is at base this is where Trunks assumptions were proven wrong and Piccolo retracted his previous statement based on Gotenks performance.
Ssj Gotenks Post-RoSat = Maybe this is where Evil Buu needed to increase his power, but I don't think so since Buu was toying with Gotenks as he faking his pain and easily broke free Gotenks energy donut. And after that Piccolo said Buu is just too strong.
The first effective thing Ssj Gotenks did was head butt Buu.
The second was the ghost.
After surviving the ghost attack.
Ssj3 Gotenks Post-RoSat = Is self explanatory