Guess its valid enough. Was in a WZ yesterday day and had 1 sorc teammate with 11k HP, a mix of green and blue lvl 40-49 items.
enemy team scored a highest crit of 9812 on that guy if i remember correctly. In normals you just need some luck at finding poorly geared players. Im more interested in what the max possible I can achieve vs people at same gear lvl as my self though