Well, I should add: I'm an outlier. I haven't seen anyone else riding such fat tires. Most riders still subscribe to the idea that a thin high pressure tire is faster, and it's hard to persuade anyone to the contrary. Thin high pressure tires definitely feel faster, and that's often all it takes to convince people.

Jan Heine has made a diligent attempt to test different tires in an objective way, and (predictably) people question his methods, his results, or even his motives (he is in the business of selling expensive tires, after all).

I don't know. All I can say is: I have not found fast fat to be a disadvantage.