There are some points where I feel the opinionated aspects of Angular 2 makes things marginally quicker. However, the one thing I find most consistent is that issues with ng2 seem to frustrate me more than issues with React.
It seems that the this might be a combination of quality and length of tracebacks in ng2. Quality seems to be spotty (sometimes very helpful, sometimes not), and the length of tracebacks in a ready-for-prod project are easily enormous (although sometimes only small). Leading to much more frustration while trying to find what the issue is - probably a matter of not declaring a service in a module or something.
Similarly, the whole injection and declaration process feels tedious and unnatural to me, compared to React, where you just import components from wherever you'd like and use them.
They both work fine, I'm just noticing that my frustration level is generally lower with React. I'm curious how it is for others that are using both concurrently, to compare.