The current gen S197 platform is NOT superior to the current the Camaro platform. How do I know this? Because I own a track prepped '13 Mustang GT and frequently run against and have driven everything except the new Z/28 on the track. In fact I was running a SS 1LE yesterday at Laguna Seca.

However, WITH some mods, Mustangs are unbelievably capable. I recently did a full coil-over suspension swap on my car complete with watts link, torque-arm set-up and JRI shocks. The difference is night and day. No more body roll or hard brake dive, power delivery is planted even at full-throttle corner exits and I can now run a 315 squared set-up. Long story short, the stock platform is good, but it takes some serious suspension to make it great.