They aren't on that level because Luck > Carr/Mariotta

But lets not pretend the talent level of those 3 teams not including quarterbacks is pretty similar

The Colts wish they had the Titans o-line or the Raiders front 7

Uh if by front 7 you mean Mack...lol Raiders defense is awwwwwwwwwwful. What?
It also doesn't even make sense to compare those 3 teams apart from QB? At least Indy is NFL caliber.

It's just Mack and it's still better than Indy's was the point lol