well lets do some math here.
You started your current account 4 years ago (to the day).  You currently have 21,236 posts.
So in those 4 years.....
365 days x 4 years = 1,460 days + 1 leap year day....so 1,461 days.
21,236 posts / 1,461 days = 14.54 posts per day (wow...impressive)
Ashley.....
Started on May 2nd, 2007.  So that is in....12 days.
so 365 - 12 = 353 days.
She has 7,711 posts in that 353 days.
7,711 posts / 353 days = 21.84 posts per day (dear god).
So on average....she posts 7.30 posts per day more than you.
Meaning that if she was around for the same amount of time as you, she would have 31,908.24 posts.
That is 10,672.24 posts more than you.  Meaning your post count would be 66.55% of hers.
So to say you piss on her regarding post count....is a bit wrong.  She actually pisses on you (and probably everyone on NS)
PS - if you don't step up your game, she will catch you in 1852.74 days (hahaha...still a long time, but with a 13,525 post head start, I would say that is pretty reasonable.