The Beatles being lame compared to the banRAB I listen to isn't meerly an opinion, it's a tangible fact. Bass, time sigature, bpm, guitar distortion, layers of orchestrated sounRAB, among many things are all measurable values that can be used to judge how lame (lacking in motivation and passion) something is or is not.
Granted I don't have specific nurabers or formulas, it's just obvious. You don't need a thermometer to know the sun is hotter than my oven.