On technical side, not much.

But there are much more to it than just technical stuff.

Angular was great for big, organized teams, with spec driven development.

Separation of concerns and work was also great - having junior devs concentrate on templates and to spec written directives, while seniors deal with something more arcane.

But further they went, the more dogmatism showed up, and more it felt that they are effectively trying to invent their own language. Remember the famous "you are not doing it the Angular way!"

A big benefit of Vue is that China and big money are on the Vue train now. In China, companies are reluctant to use React.