You'd be mad to bet against GSP here, but i expect Jake to put up a decent fight. I think GSP will keep it standing, as i doubt Jake will be successful with takedown attempts and the gulf in ability standing is quite massive.
I hope GSP gets a finish, but i doubt it. What i can say is that if Jake does get him down, GSP could easily be in ALOT of trouble. He would be wise to avoid the ground game altogether.