* Specific model: Both the Camaro and Mustang had different V6 engine options and trim levels in 2002. Some V6 engines produced more horsepower and torque than others. The transmission (automatic vs. manual) also makes a significant difference.
* Modifications: Any aftermarket performance modifications (exhaust, intake, tuning, etc.) significantly impact the performance of either car.
* Driver skill: A skilled driver can extract more performance from either car.
* Condition of the vehicles: Wear and tear on the engine and drivetrain will affect performance.
To determine which is faster *in a specific case*, you'd need to know the exact specifications of both cars. However, generally speaking, the performance differences between the V6 variants of those two cars in 2002 were relatively minor. In stock condition, they'd likely be very close in terms of 0-60 mph times and quarter-mile times, with slight variations depending on the factors listed above.