A lot of walk ons/lower rated recruits are more developed and sometimes more dominant in high school than some hire rated recruits. But they don't have the body/potential/athleticism of someone rated higher. A higher rotating means more potential. A lot of linemen can plateau in high school, just because they are bigger and stronger than other people... Granted, still talented, but if you give me A-Rod with Bill Callahan, he might be an all American at this point. Developing talent is our weakness, and OL is often where talent needs to be developed and shaped the most.
So if anything, it reflects more on Cotton that we somehow have an abundance of 2 stars out playing 4/borderline 5 star o linemen. You can't honestly believe we are just THAT lucky to have 2 stars walk on and dominate.