I think we've beat them in the window this year tbh. And I don't think anyone else has done better than us, maybe on par with us at most. Our defence has transformed, our midfield is the strongest in the league defensively, and as for attacking options we lack a certain sharpness/end product, but with depay/mata/januzaj/hererra/young, it's up there with even Manchester City's imo.
What City have is an established connection with Silva/Aguero/Yaya that is possibly the deadliest in the PL right now, whilst also starting to integrate Sterling into the equation. It's frightening the movements they make between them, and it's something hopefully our forward line can start to produce at some point this season.
Kompany/Demichelis I thought was a good combination at the back, and Mangala has started to root himself a bit now. I dont think they needed otamendi.