Not saying I’d expect everyone to have been to all 4 but people go to Vegas a lot and many don’t live in Utah and many have all 4 where they live. It’s not impossible to assume people have been to more than one.
But yes, your point is correct. Many are voting based on where they have been and Ruth’s Chris is likely winning based on that. I’ve been to all four and, IMO, Del Friscos is much better than the other three.