I don’t believe Angular is any bit slower then react currently. Any comparisions I’ve seen usually have some level of bias where the author either chose not to use some feature that would change the comparision to be more equal.

I’ll say that Angular recieved alot of flack over the 1-2 change ( alot rightly so ) but it’s really solid now and marching at a steady pace of improvments. I’ve looked over react and vue.js projects recently and they are all basically the same thing with slighy differences.