Pretty tough one for me. I'm a HUGE Dragon Ball fanboy, yet also love Invincible.
Conquest is at least as tough as Mark, who flew through the center of an exploding planet.
Freeza was royally messed up by an exploding Namek.
And a sun killed Brolly, while Mark survived being in one for awhile. Along with surviving without his skin.
Dragon Ball characters are simply planet busting glass cannons, with few solid measurable feats that don't involve shooting laser beams.
Conquest speed blitz's Nappa, before he can even raise a finger.