I can't find the benchmarks that I'd based my comments on to be honest, and I have to get back to work. :|

From what I remember, the final version of Angular 2 added a lot of performance, which pushed it ahead of the latest React in performance.

I did find this:

http://webscripts.softpedia.com/blog/recent-benchmark-shows-...

But the Auth0 benchmarks disagree and show React is faster:

https://auth0.com/blog/more-benchmarks-virtual-dom-vs-angula...

Angular 1 is terrible performance-wise; that much is certain.