Yes. And sometimes rookies come out and make big immediate impacts (Fuller). Just saying 11 games in that is the exception, not the norm, and I don't think we have anything to worry about when it comes to Jefferson.
If any of the 3 guys ahead of him were not producing then we could say "wait, he's not better than THAT guy?..." But all 3 are.
I think back to someone like Az Hakim who did almost nothing for the first 12 games of his rookie year and then was very productive the final 4 games and of course took off in year two.