Fine, but your argument was the LT is soo important (again I don't disagree as most important, just not "by far") and, as proof, look at Ryan Clady. If you want argue all of this other stuff, that is fine, but the discussion was about how much more important the LT is and why it should be the highest paid to have success. You failed. Miserably.
One of the starting LT's in the SB was the main character from The Blind Side. Most here considered him a pretty mediocre LT and he was moved from LT to RT in Harbaugh-land, I believe. At Carolina, I don't know if he played better or not at LT, but that is where he was. His cap hit was 22nd in the league in 2015.
Only 3 of the 2015 top cap 10 hits at LT were on playoff teams (not counting Clady, so 3 of 9) and 2 of those teams lost in the first round. Not sure So, I'd say that, while I agree that LT is the most important spot on the OL, paying huge amounts for them isn't, necessarily, the path to success. it is the same 3 of 9 ratio for top paid Centers although must lower salaries outside of the top 3 or so.
The point is, you don't need a top paid LT to win in the NFL. Neither the Panthers nor the Broncos did. The Steelers had a good chance to beat the Broncos with 3rd/4th string RB's and a rookie LT.
I would suggest that one of those key pieces to the Broncos success is that "not worth a third rounder" Sanders, though.