By most accounts a Muscle car was a car that went staight fast and was a big car. Sport cars came from the small British cars in the day that did great corning and handling but would never beat a muscle car going light to light.
Todays cars are crossovers because the can do both wheel. And the Camaro may just really turn up things since it should out corner all cars in its class. IE Mustang and the Dodge parts.