The Cleveland Browns have employed possibly the best left tackle the game has ever seen. In his final season, the Browns went 0-16.
There is no correlation between having great offensive linemen and wins. If there were, the Joe Thomas-era Browns would have won a lot more games.
There is also little correlation between having a great offensive line and wins. If this were the case the 2015 Browns would have won a lot of games. In 2015, the Browns started (from left to right) Thomas, Joel Bitonio, Alex Mack, John Greco and Mitchell Schwartz.