Matthew Schroeder said:
Superman wins. He is stronger. More versatile. Better skilled. More intelligent. Faster, and can phase, affect space-time with heat vision, destroy things on a sub-atomic level, lobotomize you, and absorb energy attacks.
I'm just going to point out that Superman's strength feat is still calced at 18 times less than Jin's, Jin's last incarnation who he as all the memories and experience of has been fighting and defeating other expert martial artists for thousands of years (as well as being capable of learning any martial arts technique he's seen once and developing counters to the weaknesses of main martial arts on the fly and defeating someone who had specifically prepared to beat him), speed is equalised (or at least it should be otherwise this is a massive blitz), and I don't think Superman can absorb magical Kinto-Un lightning while Jin can absorb heat vision and ice breath with the gourd.
I won't deny Superman is more versatile, but I will say that a large degree of his versatility won't help - ice breath - Jin clones himself to distract superman and breaks out, or just absorbs the breath. Heat vision - people on his level have been taken down by it. But people 18 times stronger than his level? Not so sure about that. And again, gourd absorb. Opening and sealing space-time holes - not combat applicable, though it could help Superman escape being sealed in the gourd. Intangibility - as I covered,unless superman can explicitly absorb sunlight while intangible, it is fair to assume that his "intangible to energy" part of his intangibility is consistent with all forms of energy, and he won't be able to absorb sunlight while he's vibrating and so will eventually need to stop. Or he can absorb sunlight while he's intangible, and another electromagnetic force such as Jin's lightning can also hit him.
Lobotomy? He needs to look in Jin's, the real Jin, eyes for that to work, which there is no gaurantee that he'll be able to do seeing as Jin having his hundred clones (which are all completely identical to Jin apart from a 0.002% difference in DNA) fight for him is not uncommon, and Jin fights with a martial art that doesn't involve looking into the other person's eyes.
We've established that Superman needs to focus his heatvision on one location in order to do sub-atomic destruction and cannot do it with a field wide blast, so he can't ignore Jin's durability without focusing on a specific point, which Jin's clones aren't going to just sit around and let him do,
Superman taking a dip in the sun would definitely make him strong enough to kill Jin, but there is no gauratee Jin won't have killed him before then. Jin doesn't play around (not that superman does either, but the point I'm making is that Superman has to survive Jin and his hundred clones' attacks first to realise he needs the sun to beat him). It isn't like every time there is a threat to him Superman goes and waits in the sun for a bit. And when Superman needs to hit Jin 18 times to do the damage Jin can do with one hit, and there are a hundred of Jin's clones around all attacking with the same force, and all jin needs to do is have a clone place or personally place a small piece of RJ in superman's mouth, or nose or ears or a scratch he's made to kill him, Superman is probably going to die before he works out he needs the sun dip.
I feel I've made enough points, and I apologies for any rudeness or aggressiveness that may have come across during my comments, I got worked up. I'll let the rest of this be decided by other voters.