Difficulty

I wanted to do a test with some of the settings so I tuned the player sliders all the way up.I turned all of the cpu sliders down. I’m playing on Freshman difficulty with an EDGE rusher. In a 91 overall with max strength, max finesse moves, and max power moves. Can you please explain why in a game against the Charlotte 49ers, why can the offensive line still block me? The highest rated lineman at this time is only 76 overall. The next highest is a 72. On a matchup with the 72 overall he can still block me efficiently.