http://www.google.com/trends/explore?q=angularjs,+extjs,+emb...
As for arguments that popularity doesn't matter, well transferable skills do matter and ecosystems and communities do.
http://www.google.com/trends/explore?q=angularjs,+extjs,+emb...
As for arguments that popularity doesn't matter, well transferable skills do matter and ecosystems and communities do.