I do know, thats why I said it. What would be the point of not knowing and then saying he didnt manage to be a ball winner against City?
He made 1 interception, 0 tackles and 0 clearances while McTominay made 3 interceptions, 3 tackles and 4 clearances
My guess is your "defensive duels" stat there is another one trying to hide what its really saying, because he wins the ball less than McTominay let alone other clubs players like Ndidi.
For example :
So Fred attempts plenty of tackles, 5.6 a game. Thats even more than Wan-Bissaka - but thats how many he attempts, not how many he wins. He averages being dribbled past 3.1 times to him winning 2.5 tackles a game. So he's actually beaten more than he wins.
Whereas Wan-Bissaka attempts slightly less tackles, but makes the vast majority of them and is barely beaten. Thats what you'd want, not just someone trying to win the ball a lot but failing most of the time. McTominay is your example winning twice as many tackles as the amount of times a player gets past him
We can also look at Ander last season :
Again more tackles than times a player has gone past him. Thats what you want not "Most duels" which is a nice way of saying, he tried a lot but failed more often than he succeeded