Last time I checked, post count is not "time on a website," but actual contributions to the forums. Seriously, how hard of a point is this to get? Maybe we all should get LESS money for working MORE hours at our jobs?
Quantity has nothing to do with quality though. We have trolls all over the place here that get their posts counts up with one liners and emoticons. I don't consider those contributions, if anything they are detrimental and just take up space on Arn's servers. Do my almost 7,000 posts here somehow make me a "better" member than you? No.
As for the job thing, thats not even a logical equivalent, you EARNED that money by actually doing something productive.