Apparently Raditz can't actually do that? It's the only reason he was accepted.
I'll admit I'm not very familiar with Karna except for the unfinished version back when Apocypha was still a game idea, so I just need to see what he can do.
Ah I see, then the player must be going with the manga only version of Raditz.
Well Karna has his sun armor that negates 90% of damage done to him on all planes, Vasavi Shakti which is capable of firing a blast that can annihilate gods at the cost of sacrificing his armor, the Brahmastra which can be compared to a nuclear weapon when charged with his prana burst, which manifests in the form of flames. He ranks in the upper cusp of martial skill among heroic spirits, and far exceeds Siegfried in basic combat skill.