I have the opposite issue. I've been around for about 11 years but was only active on the previous forum for 2-3 years, and had less than 600 posts. And I haven't been super-active here either. Yet somehow I've raced up the 'ranks' really quickly, and it doesn't seem right that I have a higher or even equivalent 'rank' to someone who'd posted thousands of times over many years. I don't like the ranks anyway. Seeing someone's number of posts gives a much better idea of how active they are, and removes the competitive side that has no place here.
Also this forum just makes stuff up! I recently got a badge for starting 25 discussions, when I've only ever started 5 or 6 on the previous forum, maybe one on AHQ, and I don't think I've started any here. Where did it get 25 from?!