I think it's just a disagreement on what we mean by "basshead".
If we mean ultra powerful, rumbling bass, then yes it is. If we mean bass that overpowers the rest of the spectrum, then no it isn't. The bass on the PH6 definitely rivals others (not the insane ones like the JVC Hammers or whatever, but still), you turn these up and there's bass for days, but it's all so balanced and lovely.
I don't buy that's of lower "quality" than LCD2s or whatever either. To me it's top notch.