I know that the comparison was far from perfect, as I acknowledged in my initial post.I made couple of empirically unverifiable assumptions, all flattering Ange and overstating the case that can be made for him. I'm aware that it's a futile thought experiment as Ange will probably never manage a club close to that level. The point I was making was at the very end. Maybe you missed it. The post was far from a praise for Ange, or the job he has been doing here.
But as a more general point, a distinction can be made between managers as floor raisers and ceiling raisers. Floor raisers are the ones who excel at uplifting teams from the ground. They create compact, hard-nosed, neat and tidy teams where the whole is bigger than the sum of its parts. They're not necessarily park the bus merchants who get a joy out of making the game as hideous as possible. They can play an appealing brand of football under specific circumstances. But their goal is to make the most out of their limited resources. Guys like Nuno and Moyes made a career out of this. It's certainly a skill.
Ceiling raisers, by contrast, tend to excel at situations where they have an abundance of resources at their disposal. They have no problem building up attacking, free-flowing, dominant teams that comfortably overpower their opposition. They make serial winners. This is a skill as well. Not everybody is up to it. Some fail miserably when trying to take that step upwards.
Now, these two don't have to be mutually exclusive. Ancelotti was a floor raiser managing Everton. Year later, he went back to being a ceiling raiser with Madrid. Some managers make that transition quite smoothly. Some, like Nuno and Moyes I mentioned above, can't make it. They had to go back to where they're most comfortable at.
Coming to Ange, I see him close to a ceiling raiser. That's what he did with Celtic. That's what he may be capable of doing with top teams. We may never know. My point is that, even if Ange turns out to be a ceiling raiser, it's irrelevant for us. The way this club operates necessitates a floor raiser. In other words, what Pochettino did in his tenure. It doesn't have to be him, but it has to be someone cast in the same mold.
Being a good floor raiser is not a prerequisite for being a good ceiling raiser. A good ceiling raiser is not guaranteed to be a good floor raiser just because he did well at a 'higher' level. These are two different situations. With different expectations, requirements and circumstances. They're not directly comparable. How well or poorly a manager performs in one of those roles is not indicative of how he will do in the other.