Peugot actually have some really good drivers, sarrazin bourdais klien, all of them tbh are very quick in terms of raw pace but non of them are seasoned sports car drivers. It's like someone said on the motors TV commentary, Mcnish just doesn't seem to lose speed in traffic, whereas bourdais can go from a 43.2 or whatever his fastest lap was and lose 3/4 seconds in another lap. Sports car racing isn't just about being quick, like in F1 for example, it's about being able to predict what the field is doing and adapting. Thats why someone like mcnish who wasn't necessarily lightning in F1 can be the best driver in sports cars better than any other F1 driver in a sports car.