I love this car. I'm not fond of the Le Mans cars, since those are often overkill when you use a Le Mans car and you race against the other Le Mans cars. This car is slower, but still able to win the GTWC. I haven't tried it yet, but the CLK-GTR is slower and I did use that car for GTWC and won 9 out of 10 races.
Note: Bot cars aren't tuned. They are completely stock except for tires and Oil change. No upgrades, no suspension change, nothing.
The major advantage of this car compared to the CLK-GTR is that the tires wear off much slower and therefore you can use softer tires and use the CLK-GTR pit stop strategy. In a practice race against a Sauber, R92CP and some other LM cars on Super Speedway, I was able to win that race with a gap of 5 seconds, because I used hard/superhard and did not make a pit stop. I wasn't able to win this race with the CLK-GTR.
I can't complain about this car. If you wan't something between a Le Mans race car and a normal race car, this is the car for you.