Of course they can. And a carbaurated motor can be made to work as well as a fuel injected motor but does that mean that the carb motor is equal to the performance of the fuel injected motor
If you take a trip to your local drag strip you'll find 99% of the cars using carbs, they are still better and faster than injection, I know,cause I run one myself. All these guys are right, it's the guy doing the shooting, not the equipment or the cams.