If that's all the time it took for you to get to 100 WW, then you a) have no job and b) have no friends outside of the game. No casual player (3 hr or less per day) is ever going to get WW to 100 in a week.
I always hate these "its so easy" time estimates from people that just play the game 24/7. There are many players that have grown with the game, got jobs and families and other responsibilities that no longer can play the long hours. We don't need that same time sinks any more with our limited playtime. And especially not a crafting time sink just for ammo.
Now I'll sit back for the inevitable. "but I have a life and friends and a 80 hr work week and still levelled WW in week, your just doing it wrong" reply.