http://www.forbes.com/sites/davidthier/2015/07/17/nerfing-gjallarhorn-and-thorn-is-the-exact-wrong-move-for-destiny/ Read through this Sols. It's not long but I believe it has a great view that's explained by a gentlemen from Blizzard when it comes to balancing. It may not always be correct, but definitely makes sense in this situation.