The adult side is the same as the non-adult side - the numbers you use for the non adult side are low for the better affiliates
As Ramster said - its all in how much you are willing to put into it that determines how much you will get out - and how much you try to learn and do - rather than imitate others - You can imitate success all day but in the end you'll just get imitation money as a reward
(damn Im gonna have to patent that phrase and sell it to one of those poster for success publishers)