Again, sportcars have more rear weight.

I watched some STL vid of Sebring. Might have been GA in Teggy or honda maybe chasing a Miata. The Honda had more power but was very slow entry - exit speeds. IE at T 4-5 the Honda touched the brake while I know that a Miata just flicks left. Same @ T1, Miata, just lifts and turns left @ 99MPH/4th gear, and the Honda maybe even down geared.
Had they swapped cars and got rid of the Honda push, the Honda would maybe be faster.

On another note, ask Drago how much 50#slows his car!! .6-.8 per lap at Ssebring in a Miata.