http://www.footballoutsiders.com/stats/ol
Some lines can pass block. Some lines can run block not all can do both but because a quarterback takes a lot of hits doesn't mean the line can't run block.
Before we start shoveling dirt of Kaepernick's grave maybe the o-line just got old.
Thing is, those things need many grains of salt.
Where did they have Indy, at 6, for pass pro? Have you seen them lately?
Marino used to alter all our Oline sack stats because he got the ball out lightning fast. Luck is able to absorb, avoid, step up, etc pressure and get rid of the ball, good or bad all the time. That keeps their sack totals down, but that doesn't make their oline "good" in pass pro.
Same with running. Ourside of Herron's 1 game, and Bradshaw in the games he's played, 1 100 yard runner in 45 games. Every team, defense, coach, player, knows it's going to be Luck slinging it, and for the most part, they still can't stop him. Denver has Peyton, but they've also had big games from Ball, Hillman, Anderson, hell McGahee functioned for his final year better than anything Luck has had.
Indy will get beat in the playoffs at some point, by Denver or NE, it won't be because of Luck, it will because their roster is extremely thin outside of 5-6 pretty good players, and one freaking insanely good one. If they can start drafting like they did Peyton in the late 90's, early 00's, Luck will be a nightmare to deal with. But that GM gotta come thru.