Regarding team selection vs. Wolves:
Before the game I thought he would pick Matic and VDB for the mid with Pogba Greenwood Sancho up top, but I didn't think too much about the individual players we would be facing (I guess that's why I'm not the manager), taking that into consideration I agree with his selection.
With McTominay out, and Matic struggling for speed against a pacy wolves (plus generally not the best showing against Soto the week before), Fred was our best option in mid as the anchor to recover the ball. He needed a partner, and while that could have been VDB, Pogba got prioritized due to his form in the games before.
Now why couldn't Pogba stay up left? Well because Sancho deserved a start to show what he could do (+ fans had been putting on pressure for him to start), and because our midfield would be a weaker link than usual with no McFred, and it being Varane's first game where he and Maguire will need time to develop their relationship, we needed defensive help from our attackers. James was selected to be on the right side due to his speed so he could help out AWB with Traore who has shown to be a big threat against most teams (several called for us to pick up him instead of Sancho last year). I also saw Sancho fall back and break up counter-attacks from Wolves after we had pushed forward on the right.
Because our wingers had to help out defensively, Bruno had to push further up the pitch as a False 9 at times to help out Greenwood for us to remain an attacking threat while staving off the rush we expected from Wolves in the first half.
Wolves are the in-form team when it comes to creating chances (They are 1st in chances created over the past 3 games, plus top 4 in every other chance related statistic), they just haven't been able to put them away. Spurs also struggled to win 1-0 against them, with 8-25 in chances. Starting James and Sancho allowed us to tire them out in the first half, and then bring on Cavani (who weren't fit to play an entire 90 min yet) for a tired James to put the pressure back on Wolves.
Sancho didn't have the best day offensively, so Martial with fresh legs was brought on to try something different.
Now was it pretty? Not at all, but the gameplan worked, with the players available to us. Would Ole have loved to have another defensive midfield option (especially with McT. out) so he wouldn't have to move players away from their better positions? Of course, but he has to select from the players available to him. I'm certain we want to buy another defensive midfielder, but if we can't find the right player for the right price we usually wait for the next window(s) instead of bringing in a square peg that needs replacing later anyway.
Regarding Tuchel
Yes he won the CL, and that was a great achievement, but before the season started everyone expected the Chelsea squad to perform better than us, that we would struggle to finish top 4 compared to them and others. (And he had just been sacked from PSG due to underperforming, very few of our fans wanted him to come to us at that point, especially since Ole had us Top2 at the same time).
Yes, on the remaining 18 PL fixtures from he took over Chelsea, they managed to snag 4 more points than United. But we had different priorities from them since we remained comfortably in top 4 from January until the end, while Chelsea had to play catch-up. Not to forget that with the Liverpool game delayed due to the protests we had 4 games in 8 days, and had to proritize other games than PL since we didn't need the points to guarantee top 4 like Chelsea and the others did.
Tuchel lost as many (3) PL games as Ole in those 18 fixtures, including 2-5 at home against West Bromwich Albion who were placed 19th for most of the season. Why couldn't he produce a result at home against a bottomfeeder club?
And when it was in Tuchel's hands to secure Top 4 on the final day of the season he bottled it by losing 1-2 against Aston Villa, who had nothing to play for. But was saved by Leicester losing at home against Spurs (who only had the conference league to fight for, compared to Leicester's CL chances). In the Final 4 matches of the season we got 4/12 points, Chelsea got 6/12.
In those 18 games Chelsea got 38 points with a GD of +11 (24GF / 13GA), United got 34 points with a GD of +18 (37 GF / 18 GA). (Yes that period includes our 9:0 drumming of Soto, but also 7 of the goals against came in that period we played 4 games in 8 days and weren't as dependent on the results as the teams below us.)
Now let's see how Tuchel performs over a full season and what the table will look like in May. It's too early to say anything definitive about Ole vs Tuchel.