Don't think there's anything really in it overall for squad, and very little for startling 11. The biggest difference is City having those 3 ready made world class players in attack, with Aguero, Silva and De Bruyne. United have Ibra, then Mkhitaryan who I think can get close to those 2 you have, and then the rest mostly potential. Pogba if used correctly in a 3 like how Pep has his midfield 3 working I think can get us very similar in attack like your lot too.
Put it this way, if we put United's players to match City's in that system, the biggest difference for me comes in that holding midfield role, where Fernandinho is class, while Herrera hasn't played there much (but who knows, can maybe turn in to a good one as his few games have looked good). Difference between United on paper v United in real life and why City's potential is higher at the moment is because of Rooney, and I don't think Mkhitaryan, Ibra or Pogba will be at their best while Rooney is on the pitch. So when he gets dropped and we see things like the below side, then I can see both united and City become truly top teams again.
Aguero
Nolito KDB Silva Sterling
Fernandinho
Kolarov Otamendi Stones Sagna
Bravo
Ibra
Martial Pogba Mkhitaryan Rashford
Herrera
Shaw Blind Bailly Valencia
De Gea