Is there any way to definetly win a satuatory rape case? (for the actor)?

Answer 1

By "actor" I assume you mean the offender.

Sure, there is a way to win such a case. He simply must prove that he did not have sex with the underage victim. The defense of, "she looked 21" or "she lied about her age" or "I thought 15 was legal age in this state" do not work.

Answer 2

Roman Polanski was a director who was involved in a stat rape case, and he had to flee the United States to avoid jail.