All the strongest dbz characters are massively hypersonic in speed if not higher, with enough energy to unleash a volley of planet destroying blasts like its nothing. Frieza was the first planet destroyer depicted in dbz, and he was also the only one who had to take time to destroy a planet in any instance. But thats also only in certain cases, as logically every blast he fired against goku should be beyond continent destroying level at least, considering Nappa could level a city in a second with signiture two finger pose. The difficulty of firing a planet destryoning blasts would be insignificant to the likes of ssj2 or ssj3 goku, mystic gohan, super buu, and Vegeto. The only dmc character who i would like to assume rivals at least low level dbz'ers is Sparda. He may be able to contend with namek saga level characters, by speculation and hype. But overall, DMC only compares to DBZ in pure badassery, and the similarity of thier abbreviated names lol.