I agree w/ lamananda. In this line of work, it's common for fans to suggest that a top bottom and vice-versa. Nothing weird or predatory in that per se, though I would stop asking if they're truly not interested. Cliff says he's interested but only for an extraordinary amount... He's at least considering it.
That's where being a porn actor comes into play. A performer puts on a great sex act, a model will look particularly good for the camera, and an actor will sometimes fake it so it looks real—just like mainstream actors. The better the actor is, the more it looks and feels real. That said, genuine enjoyment is best.