I have been using Angular for a while.Few of my friends strongly recommended me to look at the cujoJS. I would never say I am good at Angular, I am still learning and long way to go. On the other hand, I have no idea how cujoJS works. Only exposure I have with respect to cujoJS is that I sat in a presentation. So as you can see I am in no way to make the decision on one over other that quick. I am planning to use my blog site to go over simple example and compare and contract each on of them from these two framework perspective. Now comes the other question why cujoJS why not ember or knockout. Unfortunately, I never spend much on that either. I started using Angular and I was hooked. As a Silverlight programmer I found it so easy to transition into Angular world than the other two. If any of you have any comments on comparing those three or any other frameworks, let me know, I am happy to add them to my list as I start work on cujoJS.
Please disagree with me and I learn from you as well.