Using the *****, Luke could defend against just about anything Superman could do to him. Superman may be fast, but the ***** gives Luke premonitory reflexes for anything he could try. A ***** Grip would render Superman utterly impotent, since under the influence of the *****, the very matter that he is made of would nullify his strength. In a one-on-one fight, a Jedi is effectively invincible against a non-Jedi/Sith, including Superman.
Now the question becomes, what effect would a lightsaber have on Superman? Superman can fly through the core of a star, so I doubt a loop of highly charged plasma would have much effect. So Luke would have to either imploy Kryptonite or a red star. Either is plausible, however. For all of Superman's powers, nothing is ever said of his mind being any different than yours or mine (as far as I know), so he would be fully susceptible to Jedi Mind Tricks. Luke could lead him like a puppy dog to a red star based solar system and then slice & dice with ease.
No question: Luke by a mile.