Life Sucks
and then you die
I guess there are tons of different definitions of "heavy" in music, or, people's interpretation of the term vary greatly. Yes, heaviness isn't all about distortion; you could play a 12 bar blues with the thickest, most distorted tone ever, and it still won't even be as heavy as a flower metal band. However, a thick, distorted sound, in combination with dark, chunky riffage, makes for the heaviest music.Heaviness is a subjective term. In some ways, I can see Zeppelin being heavier than Nile. Distortion doesn't really make you heavier than a band that uses less.
To the people that find blues based hard rock heavy: what is your definition of heaviness? I'd just be curious to see how you define it. This isn't a flame or anything.