It's still nowhere near enough context to conclude anything from about how strong we are in the air.
- why is Southampton's lowest? Do they play a lot of low% balls, crosses maybe?
- ours is heavily dependent on Maguire, over 25% of all our headers won. Twice as many as the next guy in our squad (Lindelof). Also more than twice as many as Dias to give an indication of workload.
- avoid/mark Maguire on a set piece, good chance of success?
- do attacking headers have a higher % than defensive?
I think its a pretty good indicator of how good we are in the air, duels won alone does not tell the full picture but average duels won does help. I do agree that having Maguire with 25% can be seen as a weakness if looked at it like we depend too much on him, but its also a strenght it means we have a player that wins a hell lot of duels by himself.
To put into some perspective to the starting XI of each team.
Duels won:
City's defenders: Dias (62), Laporte (42), Stones (38), Cancelo (30), Zinchenko (29), Walker (27), Ake (24), Mendy (8), Eric Garcia (3).
ManUtd defenders: Maguire (135), Lindelof (64), Shaw (38), AWB (38), Bailly (24), Telles (17), Tuanzebe (6), TFM (1).
All our defenders have more aerials duels won than City, if comparing one by one. Maguire vs Dias, Lindelof vs Laporte, Shaw vs Zinchenko, AWB vs Cancelo. Allthough it can be argued that us rotate much less than they do, so probably we would have to add Stones stats with Laporte and Cancelo's with Zinchenko's. My point is our defenders with more duels and more in average than most of the other defenders on the league. Thus why we dont conceed many headed goals.
Now on the offensive side:
City's forwards: Gabriel Jesus (19), Mahrez (15), Ferran Torres (14), Sterling (9), Aguero (2), Deap (2)
ManUtd Forwards: Rashford (25), Martial (17), Cavani (10), Greenwood (6), Amad (1), Elanga (1), Shoretire (1)
While both squads are pretty poor I think we come on top of them in the offesive side as well.
Another point worth mentioning is that while we scored only 7 goals from set pieces we managed to get 13 headed goals this past season. Which rank us 4th in the league, only below Everton, Liverpool and Westham all with 15.
So how can it be possible that we have the second best average on aerials won in the league yet we are the worst at defending set pieces and we are 4th at headed goals in the league but are 14th on goals scored from set pieces?
How can City have defenders with less won duels, less percentaje of won duels and yet manage to conceed only 3 goals from set pieces? still with their forwards being nothing special on the air how did they manage to get 17 goals from set pieces?
I think its because it has to do with training and coaching, we are not particularly bad in the air. If anything we are good by all stats in efectiveness, duels won, and headed goals and still we are at the very bottom on set piece efectiveness.