Okay so, Yu Yu Hakusho and Dragonball Z have a lot of things in common. One thing they have in common is buff, strong villains that beat the crap out of people. Who do you think would win, Younger Toguro vs Nappa? Nappa has a power level of about 8,000 and he can survive people self destructing on him and gigantic explosions. Toguro might have a bigger advantage because he can regenerate himself if he loses an arm or is severely injured and don't forget all of his forms and his incredible strength. Nappa has an ability that Toguro doesn't have, he can fly. Who would win? Use logic, guys.