This has been brought up before, like, 10 threads down. The reason is a bug, whereby you don't have enough AAs spent to actually have the title, but others see you as having it. Spend a few more AAs in class, and all'll be good.
It's most likely because it's hardcoded into the client how many AAs you need to show this and this title, while the numbers are different on our server.
but you don't know that!