Vue has one big advantage over React for an Angular shop: the views are often trivial to port, while JSX is further syntactically from Angular templates.
I would say that Vue's core libraries are very well put together. Vuex, Vue-router, vue-resource, vue-axios, etc are all simple and easy to use. Personally, I wouldn't say either community has better supporting libs than the other.
Well, being able to reuse other people's software (number of npm packages available for the library/framework) is an important variable when choosing a tool.