No, that's just shitty vendors being shitty. Accurate RMS can easily be calculated and advertised. Check out Steve Meade and his tools/videos if you're unaware

No, that's just shitty vendors being shitty. Accurate RMS can easily be calculated and advertised. Check out Steve Meade and his tools/videos if you're unaware. Most prominent brands just choose to market absolute bullshit numbers - people who know what they're actually after know how to find the brands who publish real numbers.