Earlier quoted context omitted.
Crush the Castle didn't fail - I'm pretty sure more people have played it than Angry Birds, although obviously most people didn't pay to play CTC / CTC level pack / CTC2. I know for a fact that CTC2 is immensely popular - it's one of the most popular games using Playtomic. The reason I think that AB is more popular is it fits a more general audience, the graphics/story/etc are all neutralized so they're covering ever…
I own Angry Birds, but I've never even heard of Crush the Castle.
Although Angry Birds has undoubtedly made more cold hard cash the CTC franchise (3 titles) would have plays in the 100s of millions by now.