Biggest advantage the Camaro has is the Torque under the curve. The peak numbers don't really do the actual results justice. Look at the above dyno sheet and you'll see, there are times where the Camaro is making more than 20 lbs more RWTQ.
As far as the power these engines are actually making: They under rate engines all the time. Being SAE certified doesn't mean that the engine can not make more. If you go by 15% loss (which is what manuals are traditionally calculated by) the Cars are making 490 (Corvette) and 495 (Camaro) HP at the crank. Even if you used 12%, the Camaro is still at 478 at the crank. We are living in the Golden Age for these cars. I want to call them muscle cars but they are proving to be so much more now. Kudos to GM for building us these machines
All the best,
Jared Royce
888.308.6007