I have followed all those players' stats for some time it is nothing new, nor ground breaking. I don't think those stats are especially interesting either, at least not when taken out of context. Maguire wins a high percentage of his aerials. OK, fine. The interesting part that is not added here is that he is also challenging a lot, which means he doesn't only win a high %, but he also win many aerials in total (135 aerials in total, 4.0 per game, compared to Varane 2.4 and Lindelof 2.2). For me, that is the impressive part. Add to that hundreds of aerial clearances and we can statistically see what we see on the pitch: Maguire is a beast in the air, imo the best in the PL in that aspect. We also know he hits many high precision long balls down the flanks to Shaw or the winger, while Lindelof aims his long ball in to the box with higher risk of failure, but higher reward. For me, both those types of long balls add value for the team, and the different types of long balls explain why they have different %.
He has struggled with high press some times, like every CB I guess including Harry/Victor. City one year ago is the most famous example.
Anyways, I also think he is good enough on the ball, and we will just have to wait a little to see how he works in the PL. I don't doubt that it will work out well, but I don't take anything for granted since Sanchez who was the biggest transfer disappointment ever for me.