@Ish a bit of a tangent but while Guardiola and LVG both advocate possession football, I think both (and especially Guardiola) would say they have quite different takes on that broader philosophy. LVG and Cruyff were always having little pops at each other's styles of football and I think Guardiola is more of the Cruyff school.
To be honest I think most people basically agree with the basics here:
City play the most attractive football as their Plan A. But they dont have a Plan B.
Mourinho is far more pragmatic and will play very attractive football - maybe slightly less attractive, but pretty damn attractive - at times, or completely park the bus and play anti-football, or anything in between, depending on circumstances.
So itll come down to whether City can execute their Plan A well enough, and consistently enough, over the course of the season, to win the league. If their Plan A runs into trouble, both United and Chelsea have a great chance this year.