Once money enters the equation, I'm not sure we can look at the cars people are driving and make any determination about them at all. Most of the guys in the top spots are getting some kind of incentive to use the gear they're using, and not driving what they feel gives them the greatest chance of winning. So, the best we can say is that if you see a pro putting a car in the top two mains, chances are it's capable of taking YOU as far as you could ever hope to go in this hobby. So buy what's right for you, for whatever reason.
The comparisons we can make are a little more subtle. Like, who suddenly becomes very dominant when switching from one manufacturer to the other. And, who is struggling to compete with people below their skill level because their team seems to be producing a car that's putting them at a disadvantage.