The only way Stipe loses this fight is if he gets caught in rd 1. He has more ways to beat Ngannou than vice versa. Stipe KOs Ngannou too if he gets caught. Its 50/50 in rd 1 imo and then Stipes chances get bigger and bigger from there.Stipe is the guy who thought Overeem knocked him down with a kick isn't he?
He'd better watch out for Ngannou's kicks then, I doubt he'd go for a guillotine and let Stipe recover if he knocked him down.
That said, I wouldn't be at all surprised if Stipe wins.