It actually took 13 days for hardcore players, with competent players after. I was top 25 in the world to reach level 60 (Blackhand server, 1st Alliance, Rend was 1st Horde), and it took me 13 days. About 8 Afterlife members were also in the top 25, Thott being the most well-known name.
Just some history, that no one really cares about.