It is true that the role of experience plays a large role in Rainsford's ability to survive (in Connell's "Most Dangerous Game"), but his experience with the hunt changes dramatically by the end of the story.
Prior to landing on Zaroff's island, Rainsford only had knowledge of being on the "giving" end of a gun. It is not until he becomes the prey that his experience changes and he realizes that survival is very different.
It is important that Rainsford has the knowledge of being a hunter, but the more important fact lies with the fact that he has never had to be the one fighting for his survival. Instead, he learns what it means to be the jaguar, the one on the other side of the gun.