That's because some QZers posts thousands replies only here while others make their contributions in different forums...
(and this reply is 522164th on QZ and 2338th by Serry, so I wrote 0.44% of all QZ posts)
I dunno, I think Mex has like 14,000 some odd post, ever since they took them away I have not really seen how many I have, a shame really, something I was proud of...Yea my life is that boring =)