I have never eaten at a Michelin starred establishment as paying a percentage tip there would not be acceptable to me.
Even at these establishments the major work is done behind the dining area. I am sure that a lot of points is given to the actual food itself along with other factors.
I do not want to give the illusion that I am degrading the servers. However, ordering a $400 bottle of wine or a bottle of aerated water and paying a percentage of that as a tip is absurd.