Absolutely not. Look at the goals again, you will see that on both occasions that Luke Shaw was tracking back behind the ball when he clearly shouldn't have during a 1-0 lead. Meanwhile Blind had to cover that area of the pitch; leaving it wide open behind goal for the opposition to cross the ball into the penalty area where both our center backs should be. Darmian almost never gets behind the ball, he is extremely cautious when is comes to leaving his area of the pitch wide open, because there is no way we can risk Smalling having to cover the right flank.