Please elucidate? Angular 1.5 has one-way binding, lifecycle hooks, component tree architectures. UI-router is well on the way to become framework agnostic. Redux or redux-style state management is possible with ng1.5, and a pleasure with ng2.

On top of all of that, you get the benefit of using a framework instead of patched together libraries. Basic tools like intercepting all http traffic at the request/response level is incredibly helpful with larger apps.

The only differentiating factor really left is JSX, and while that may be a personal preference, angular style templating is a lot more comfortable for developers used to server-side templating (JSP, Razor, et al)