Probably weaker than him in power. The fact that Dyspo needed Toppo's help to really put the hurt on SSJ2 Galu tells me that he's not equal to a SSJ3's power, only equal in speed.
In power it seems he's only above SSJ Cabba and maaaaaybe SSJ2 Goku, but not by enough that he can deal any devastating damage. Manga Dickspo is a jabroni