Karate Kid is skilled in every form of combat known in the galaxy, from boxing to savate to kendo. He has also made it a point to become an expert with every weapon used in hand-to-hand combat, from fencing foils to Jovian Trident spears to Krishnu gauntlets from Gaman Tol. The Legion normally excludes heroes who use weapons, but with Val they are only a sideline. Super-karate is his specialty, and with it he has done super-human things. By building up the amount of chi (life-energy) into his body Karate Kid can increase his strength, speed, endurance and toughness (AD 367). Karate Kid has stated that if Superboy took up karate, the Boy of Steel might be able to punch through a foot-thick slab of Manganium Inertron, a he normally cannot do (AD 367). Using this force, in application with his knowledge of points of stress and weakness (AD 346), Karate Kid has:Cracked through the hull of the Khund flagship (AD 347), stopped a runaway sport-speedster with one blow (AD 351), knocked out a Jovian Mastodon with one chop (AD 358), cracked through the powerful, six-inch Durlamite gates of the Metroplois Jail (AD 360), damaged tanks with a two-handed chop (AD 360, AD 367), kicked away an air car from the path of a falling boulder (AD 361), split a rock in two and took out an opponent with each piece (AD 361), fought a half-dozen assailants at one time (AD 358, AD 361, AD 367) and stamped the ground with both feet, shaking a whole street and knocking a dozen soldiers off their feet (AD 367).
Once when he was trapped inside a giant hollow diamond, Val located its natural flaw and used his iron will to coax his body to make one final chop which shattered the gem (AD 365).
Karate Kid wins.
Jackie Chan's skill is real. He studied kung fu, karate, and several other forms during his entire childhood. Some of the moves in the movies are made up because he likes to incorporate humor, but he's one deadly son of a *****, make no mistake. He's right there with Jet Li and Sonny Chiba as being the top martial artist.
entire teams inded but those entire teams didnt have the fighting skills of shang chi and iron fist, its like wolverine that can fight bricks like hulk because he got the tools to hurt the hulk but also he got the skills to be able to inflict damage, but when wolverine fights MA guys like daredevil or shang chi he lose and the same thing here while karate kid got the abilities to hurt brikcs combined with the fact that he got skills above them he will go down fighting 2 martial artists with same skill level as him
It's safe to say that Val's skills vastly exceed both together. Remember, Val knows every MA in the UNIVERSE. He took out Black Tiger (who is vastly superior to both as well). and with ease. Remember, Emerald Empress is the most deadly assassin in the universe and has mastered most forms of fighting in the Galaxy. Yet, Val one-shotted her.