Well, b/c car enthusiasts talk about cars, compare cars and specs, engage on forums about cars, enjoy the banter, the rivalry, etc. That's why.Judging cars that are within spitting distance of each other by professional driver lap times is foolish for myriad reasons... Put the same Cup 2s that the PP2 has on the 1LE and the Camaro will be faster around any track than the PP2. Probably the Mach 1 as well, even with the handling pack.
None of us are professional racers, so why do we care about the potential of going half a second faster around a track? It's going to come down to the driver, not the car, 99% of the time with these cars.