Freeza could blow up planet vegeta with a power level of only 530,000 (his first form) and planet Vegeta was said to have 10 times the earths gravity (bigger than the earth)... when Goku defeated Freeza his power level was 3,000,000 in his base form and 150,000,000 in his super saiyan form.
Super Saiyan multiplies Gokus base power level by 50 for those who dont know... and this is only super saiyan 1 were talking about (i dont think its been established what the multiplier for super saiyan 2-3 are).
I dont see how superman stands a chance.
The DBZ Verse is is simply too much for the DC universe guy... even master roshi blew up the earths moon and his power level was only around 200.... Cell claimed he could blow up the solar system.












