If this is in marvel Universe Surfer would have an advantage but Kryptonite doesn’t exist there so this is out. If it’s in DC universe then it would be Superman because the cosmic energy there won’t obey Surfer’s commands. This would be a very tough fight for either men. Surfer would outfly Superman but Superman can match that with faster punches. Surfer can shoot cosmic beams but Superman can take cosmic beams since it’s not magic or green K. Superman’s stronger obviously. Both men can take quite a beating. Surfer can manipulate matter to his wishes but he doesn’t know about kryptonite so this is out. Superman has sensory powers, senses, heat vision, breath attacks. Surfer has cosmic beams, matter manipulation, phasing, energy drain. Surfer is more passive, if Superman fights dirty and lets go he wins with more certainty. If Superman finds he can’t beat Surfer he could just take a sundip and then have enough power to break Surfer’s neck.