You are forcing it to suit your argument. I could say the same thing.
What about us? We lost Lukaku our 2nd top scorer last season & also our best top scorer 2 seasons ago, we lost Sanchez, we lost our 2nd best midfielder Herrera, despite of losing those three we didn’t sign a replacement. We finished below you last season and we lost those three without a single replacement, in your argument it should make our team worse then. Why are you ignoring that?
We also lost our manager Jose Mourinho.
We lost Pogba our best midfielder and most creative player due to injury & we lost Martial our only centre forward due to injury, and I haven’t even include the others like Shaw, Tuanzebe and the others for injuries.
Why are you ignoring the fact that we also create a new team with very young player, in fact so far this season we have fielded the average of youngest starting XI, it wasn’t Chelsea.
Let’s be honest, Higuain wasn’t any good anyway. Oh by the way you did spend money on Pulisic and Kovacic. You are only looking at your situation but ignoring that United has been suffered worse.