I just realized that I know practically nothing about American sports cars. But as is typical of forums, it didn't stop me from expressing an opinion, no matter how near to worthless it was.
American auto history, to the layman, is stereotypically concentrated on drag racing, and stock car racing. Mostly straight line or circuit track. Stereotypically, when you think of European sports cars, you think of taut suspensions on winding German mountain roads, Italian testosterone-enhancing chick magnets, and formula one racing.