He will get there. He's a prodigy and he has all of the mental/physical tools to be a perennial Pro Bowler.
In terms of the production, there are a lot of variables. Luck played on a bad team last season and threw the ball far more often than his fellow rookies, which probably goes a long way towards explaining why his efficiency stats didn't compare to guys like Wilson and Griffin. Stick either of those guys on an awful Colts team and force them to throw every down and they wouldn't have done any better. As Luck matures and as the supporting cast around him improves, he will only get better.
Did Wilson and Griffin have much better supporting casts on offense?
Is pass efficiency inversely related to passing volume?
Yes, of course they did.
Seattle - Elite RB, better OL and a top 5 D.
Washington - Better receiver group, much better OL and a better D.
There is alot of revisionism that goes on with Luck and the Colts offense because of how damn good he made them look. Go back 12 months and there was a genuine worry that the OL would get him killed and he had no one outside Reggie to throw to.
There is also the fact, and I remember Cecil talking about this on The Audible once, that Luck was asked to do far more in that offense than RG3 or Wilson did in SEA/WAS. Air Arians is a complex offense for any QB, but for a rookie to have as much success as he did in it is frankly astounding. I still remember a story from rookie minicamp last year, when Luck got to the line and didn't like what he saw across from him. He called out a new protection and the coaches had to call the play dead because the rest of the rookies had no idea what he was talking about. The protection he'd called was way ahead of where every one else was in the playbook.
None of this is a knock on RG3 or Wilson as they are both superb QB talents, and I'd be delighted to have either of them as the Colts QB but if you gave me the choice of the 3 of them, it's Luck every time and I suspect most of the NFL teams would go the same way.
He's not elite now, because you can't crown anyone elite after one season, but I've got every confidence that he'll be a top 5 NFL QB for the next 10 years.