Considering his join date and average posts a day, it's understandable. Seen some people who joined just a few months ago having 2,000 plus post counts.
Yeah, there are a lot of people with a high post count in a short time, but I credit that to being a new person in a busy forum and being 'excited' to get in to conversations. A lot of people get like that on a new website that is full of activity. After a while, people tend to step back a bit with their posting habits. I don't blame someone who has been here for a week having 20+ posts a day as an average. When you are here for like 10 years and STILL have 20+ posts per day, you should probably go outside and get a life.