...except that they all joined at different points.
that doesn't matter.
a strong poster knows who he/she is. and PPD don't have the same bearing as to when you joined as total post count does.
for instance, lit would have a higher total post count than kevv if they had joined at the same time....given the current PPD avg.
and, odeon would have more total posts than kevv, if post count was based on quality.