I predict benJAMIN will win in 4. However it will be revealed after the final that all the matches so far are actually just a qualifier to see which peasant is almost worthy enough to have the honor to face our lord and savior, Forsh. Of course that match will still be a bo5, and there I predict the unstoppable menace of god Forsh... Wait that's not right, something as grand as him can't be compared to a god, that's a disgrace to Forsh. In any case, Forsh will stomp benJAMIN easily in 5 games, and the score will be 5-0 after benJAMIN gets blown away by the true terror he faces for the first time in his life and wants to fight the meaningless (and hopeless) games so that he can further witness Forsh's greatness.
Btw I totally didn't forget to predict semi.