But where I differ a bit from your point is that, from what I saw, the most important detail is the setting ( reglage / mise au point, in french ) of the movement.
A multi axis tourbillon, if you take the JLC one, was second to a better set Master Tourbillon.
And the scary thing is that I saw sveral Vintage Rolex amazingyl accurate. One gained 5 seconds in one month!
Ok, there are variations, one day it gains, the other day it runs slower, but at the end of the month, it gained 5 seconds!
There is a lot to say, learn and discuss here!
Best, my friend.
Nicolas.