I don't know about the Model 3 because it's not out yet. But just going with Tesla, there are no other long range EV vehicles with a supercharger network for fast, efficient, long distance travel. So my Model S is definitely in a class of one. I don't like that, and in fact, Tesla's mission is not to be a class of one. Tesla's mission is to promote EV transportation in general -- not just their own brand. As such, their competition is only with ICE and not other EV's. I also own a Leaf but it's obviously in a completely different class than my Model S.
I really hope when the Model 3 is rolling off the assembly line it won't be in a class of one. I think it will be in a class of one though, and I don't think I'm delusional at all for thinking that, but I'm certain others here think I am.