I don't necessarily disagree with any of your points but I think there is proof that teams can 100% win the Championship by playing attack minded non-grinding it out football.
In recent years there has been Biesla with Leeds, Maresca with Leicester, Kompany at Burnley, that German bloke that I can't remember his name with Norwich - the grind is the fact there are so many games and so many competitive teams right the way through the table.
I can admit I have obvious bias but I don't think anyone can say that Ange's football won't work in a particular league. At the end of the day the game is played with a ball and two goals no matter which division you're in.