Well, I don't know about your very last comment, but to address the earlier stuff: I think its fair to compare the RX-8 to 2 door 2 seaters AND sedans. Different people will use it for different things. For some it will be their weekend sports car. Others, their daily driver. It spans both categories, so why not compare it to cars from both categories?
"There are only three true sports: bull-fighting, mountain climbing, and motor racing; the rest are merely games."
- E. Hemingway