I dont think anybody said that the escudo was "the best car" but it is an amazing machine. There are a couple of important factors to remember.
1) its a Rally Car, not a road runner. Rally Cars are built differently, drive differently, and act differently than normal cars.
2)Its too light to keep traction at 1850 hp. The damn thing weighs like 1500 lbs.
3) its all wheel drive. Granted, there is no way you would EVER have traction if it were rear wheel drive, but it causes slippage on tight turns if your differential isnt tuned exactly right for EVERY TURN.
4) It dosent provide enough downforce to handle properly. From my understanding of the setup of the escudo, it provides MORE downforce than an F1 car (which can drive on the ceiling if need be) but not distributed correctly for high speed driving. Its meant to accelerate FAST around those Pikes Peak turns.
5) It has a MUCH higher center of gravity than an F1 car.