You are one sick, sad, strange little man...
And just so I stay on topic, I think Sparrow will win. When you think about it, you have to look at statistics. Sparrow is a dangerous pirate, who is both manipulative, insane and quite a swordsman. When you look at Guybrush, he'll just try and solve a complicated puzzle in order to defeat Sparrow.
There go: Sparrow could just simply kill Guybrush straight away with his sword or gun, while Guybrush would think of something complicated with not enough time in his hands to live!