Cars should not be equal mate.BoP should make the cars perform close but not the same.
Some should have an advantage in slow or small tracks,others should have an advantage in bigger or faster or "whatever" tracks.
The point of BoP is to make a series (championship) a close affair.Its not to make every car the same.
With that said,BoP should work in a way that you dont have 1 or 2 cars dominating every track.That was not the case since from Closed Beta till this update,there were specific models/cars that could dominate in every single track.Its not something easy to do.Even in real life,FIA had big problems:remember when the gave a waiver to participe to Ford and pretty much failed with BoP that had a result of the "historic comeback and domination" of Ford GT (Le Mans)?
Anyway,I have not tested the game after the latest patch but everyone knows that BoP was not working.Hope this update made things better.