Board Thread:False Info and Speculative Discussion/@comment-26674650-20160905002510/@comment-11533671-20160907044402

@JEK - Valid points and something I've thought about but discounted because:

1) Peter has shown tremendous willpower and yet the achievement failed him. I'm betting it wouldn't be such a rare occurrence if it were only force of will.

2) Deaton suspected/hoped that Scott was one because of his virtue. It seems to be part of the characteristics of a True Alpha, at least if Deaton is to be believed.

Add all that to Brett's explanation to Liam about Scott and how much in awe others have seemed to be of one. Other werewolves look up to the True Alpha. It also stands to reason that if a werewolf's natural instincts are often "savage" and prone to violence and anger then one possessing a good virtue would be rare among them.

This is just how I read the information and have come to understand it however and if strength of will alone is the only ingredient then I hope we're given a reason why they're so rare.