What are the specific benefits of angular.js vs. ember.js

I have been researching between these two guys this week to work in a project next year. What I have found so far is that angular is better for small/medium scale projects and ember would be good for high scale projects.

I have been playing with angular and it looks great. It has couple rules, which keeps the developers on the same page.

Well, let me know your thoughts. Thanks community!