Take note that this is goku and piccolo from the 23rd budokai tournament. (End DB) And end series Yusuke.
They fight in demon world.
" @hitsusatsu11: Sensui did say that if he used half of his power on earth he would pretty much destroy the planet. Goku and piccolo might have a little problem. "No, at that point yusuke and sensui were mesa busters.
" @Abomination: I dont recall that but Yusuke becomes more powerful than him and he is only mountain busting level and his energy blasts > anything Sensui ever showed. "