I assume tashoecraft was referring to the latest version of Angular - which I believe is 5. And 6 is right around the corner. I would make an educated guess that the most recent Angular is not user perceptibly slower than React for most applications.
Everything is a trade off, so if you value structure and convention over raw speed then Angular would make sense over React. Also, I imagine the latest versions of angular are faster than Ember (but I don't actually know).