There really isn't a good barometer for him. In limited snaps, he was devastating. The other rookies to put up 13+ sacks were:
1. Jevon Kearse 14.5
2. Aldon Smith 14.0 (2 in playoffs)
3. Dwight Freeney 13.0
He's more like Kearse than Freeney. Freeney is a technican, Kearse won the genetic lottery. Freeney has been a great player, Kearse was never able to match his rookie total and slowly declined throughout his career.
Aldon has some of the best raw ability I've ever seen. Huge frame, long arms, great strength, and quick burst. Saying he'd be the next D. Ware last year was laughable, now its definitely reasonable. The only real concern is 1st and 2nd down duty will flag him of us energy and he won't be able to attack the QB as effectively.
I see it a different way. I think he will be better with less sacks. Not because his skills have diminished, but because other guys in our front 7 will take the sacks from him. No longer will Justin Smith and RayRay get doubled. Both Smiths will get doubled, and this could lead to Brooks, Willis, and Bowman to have good pass rushing years.
I guess what I'm saying is Aldon won't be able to muster 14 again, because our front 7 is too good
. (he'll be a double digit sack guy, not to worry)