Michael has no fear, he is just evil, Pennywise feeds on fear and Michael will easily defeat him because he is not afraid of him, but Jason would defeat Michael
Jason from the films has more feats of strength, skills, speed, weapons, combat experience and IQ, more stealth, while Michael in the cot version It has improved strength, durability and resistance, but it is more intelligent, better agility, hacks, although Jason also has more. Jason would gain from being immortal and stronger with medium or hard