This is just a guess, but maybe that's not how old the account is but the actual total playing time? If it is the age of the account, that's pretty good to get an average level of 65 in a hundred or so days. Nobody can get 1500+ total in 5 months, that's the amount of time they've spent in-game. We should be able to see how much time we've spent in the game, but it shouldn't be public. I concur 100%.