Originally posted by illadelph12
Hmm...If I remember correctly, Val was able to shatter an unbreakable gem with a punch (after PC Mon El and Superboy failed to damage it at all), and he also punched his way out of a diamond (iirc) encasement while he was near complete suffocation. If we're using the "best" Karate Kid, he might be able to split Thanos's head open in a purely hand to hand encounter, but the likelihood of him landing the blow isn't very high (though measuring on how Gamora did in a spar, Val could likely kill him).
It's a hard call.
that was the emerald eye, which emerald empress used. the thing was damn near indestructible. superboy at the time could not even scratch the thing. yet, val with a single blow, shattered it. pretty impressive.