Tarmac in RBR

I keep hearing that people think the Tarmac in RBR is unrealistic and I am wondering why. Do i understand that people feel the TArmac doesn't have enough grip and you slid too much? Is that right or am i misunderstanding what everyone has a problem with?

I find it more realistic than the gravel to be honest (the gravel has too much grip) where the Tarmac is about what I have found in real life rallying.

Just curious.