I think the title of the thread hits the nail on the head. After years of expecting big time recruits to not live up to potential (and yes, recall bias is in play to be sure), I now have come to expect a recruit to outperform his star ranking at the end of his 4 years.
Would I love more 5 stars here? Of course. But do I think we get 5 star college careers out of a number of 4 stars? Absolutely.