Not the best driver in the world, but at the moment in group 4 there are more M4 than Meganes. I'm a bit suspicious about this (look at the avatar), but I don't care If the M4/Megane are overpowered, it can be easier to drive, but a good driver can be a pain in the a** with less powerfull car.
Other scenario...consistency (constant???), I won a race in sport mode with a gr4 Lancer in Brands Hatch (only have 3 wins or 4) where the top drivers were about 1/2seconds faster in qualifying, but with the overtaking and less than perfect racing lines by them (and a bit of luck), I was able to win.
Look for the example...zzz_pt showed in a different thread, that he won with a AMG Gt3 in a grid full of Porsches or M6 don't remember. Why? He is a excellent driver, and was pushing an "inferior" car to the limit.
PS: Yesterday in a group3 daily race, penalties without hitting nobody, and got pushed out of track and got about 20sec penalties....wtf...