My comments were about the CEA rating, which is not conducted by consumers, on their work bench or in their car. Any standardized rating system should be conducted by the manufacturers (under strict guidelines), or an independent third-party testing organization. Such tests would be using a power supply sufficient to handle the amplifier being tested without voltage drop (otherwise whats the point), and would use either a static load, or a free-air woofer with standardized test recordings (probably just a tone at a certain freq).