GSP OR JAKE SHIELDS who will win?

If Sheilds fights like he fought in Strikeforce I think he has a chance at winning. He didn't look good at 170 vs Kampmann because he ran out of gas early. So if Sheilds worked on this and he doesn't run out of gas vs GSP, I think he has a chance at winning. I hope Sheilds can pull out a win, but if I had to bet I'd go with GSP.