It's rather easy to get Scholar, Sage, or Guru at a low post count. I got my guru at 1k posts. The lower your post count, the more impact rating have on your karma. For example, if we were to have the same karma, let's assume 4.5, it would take more rate-downs to drop your karma down to 3.0 than it would mine. Posters such as
Nexa would take a long time to de-guru, and a poster like Jophiel would be impossible to de-guru due to his 30k+ post count.
Titles really mean nothing after Scholar for most people. The ability to have the shiny green and red arrows is all that really matters, IMO anyway.