Board Thread:Warhammer 40k General Discussion/@comment-86.10.75.96-20160401182432/@comment-8881468-20160618004204

You forget that the Muscle mass and density of an Astartes os very different to your common human and muscles are heavier than fat.

2. Power Armour is powered, aka it weighs mroe but moves itself unlike your body armour, power armour is not dragged around by the astartes, it is a second skin to him.and it would be proportionally heavier because the weight is no concern of the astartes within.