If you are arguing that the lack or presence of Wan Bissaka at RB is the main factor determining Man Utd and West Ham’s league position, I’m afraid you’ve lost me.
As you say, Mazraoui is clearly the better passer, I’ll ad that his defensive positioning is better, as is his movements in attack off the ball, as is his ability to mark people for headers. He has been good one on one for United, and probably better than Wan Bissaka against players going inwards. Wan Bissaka is better one-on-one against players going on the outside. RB being passed on the outside is not one of the many problems United has had this season so far. That doesn’t translate into Man United improving as a team totality, because it is one of a hoarde of factors influencing that totality, and not one of the more significant either.
I’d further suggest, again, as I did in the bolded quote as well, that I think Mazraoui is a type that will be more useful to Man United’s next manager as well, as I don’t think Wan Bissaka would fit the profile for any manager I’d hope to see at United anytime soon. Ten Hag’s effectiveness with getting a tune out of his chosen players bears little upon that opinion.
Watching Mazraoui play has been one of a few boons this season. I’ve never been into the bashing that Wan Bissaka has received, and think a lot of his weaknesses has been overexaggerated. I still think it was the right decision to let him go, and Mazraoui has done very well to teplace both him and Dalot despite everything else.
Some of the goals we've conceeded and a lot more chances on top of that have come from our RB making mistakes
Brighton winner he allows the cross to come in at the end
Van Der Ven runs past him with the ball and then goes into the box. Could have at least brought him down on the edge of the box, crosses for Johnson's goal for Spurs
Udogie knocks the ball past him and breaks down the left without him having the pace to get back, passes to Kulusevski and then onto Johnson who hits the post at 1-0
At 2-0 up Kulusevki puts a ball behind Mazaraoui for Werner to go through, Onana saved from Werner and the rebound. Poor positioning, doesnt have the pace to recover
Moura got in when it was 2-2, Porto's leftback and he didnt have the recovery pace to defend his position
Against Liverpool the TAA early offside given goal he hesitates to confront Gravenberch's run with the ball, then when Diaz is played the ball on the outside hes poorly positioned his body so Diaz goes past him and gets the ball across the box
For Liverpool's actual first goal he is too far up the pitch and reacts very slowly when Casemiro gives the ball away, jogging back and not getting close to any involvement fo Diaz's header. He had no reason to be so far up because Casemiro's pass that was on was to the left wing and had nothing to do with Mazaraoui on the opposite side.
He has also made quite a few tackles and interceptions where he did win the ball and defended well. He's made our most tackles with 3 per game on average. But no doubt our RB position is far more open and vulnerable this season than last with teams getting in several times a game. He's making far more mistakes than AWB and funnily enough AWB has more key passes per 90 mins this season than :
Rashford, Zirkzee, Dalot, Bruno, Mazaraoui, Mainoo and Ugarte
At this moment in time he's playing better even if Mazaraoui is doing a decent job overall given how much work he's given to do at fullback. For some reason, probably because he's new, Mazaroui isnt getting called out for most of his mistakes likes Dalot id and AWB was. But there have been quite a few so far