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1. Angular 2 supports Search Engine Optimization (SEO). In other words, applications built with Angular 2 can be easily indexed/searched by Google or Google Scholar (NOTE: we verified this by running a series of tests with Google Scholar team).
2. Angular 2 supports Accessibility guidelines. Screenreaders (and similar) can have issues with Client Side Javascript applications. However, again, we verified Angular 2's accessibility promise with the help of accessibility experts at U of Kansas
3. Angular 2 supports web archiving (e.g. Internet Archive harvesting and similar). This also can be problematic for some Client Side Javascript applications. However, we verified this with the help of RCAAP (Portugal).
4. An Angular 2 application works even when Javascript is turned OFF.  While this may sound strange, this is the feature that supports #1-3 above. Your users don't need to even have Javascript running to use an Angular 2 application. To support this concept, Angular 2 pre-compiles Javascript into "static" HTML on the serverside. So, when Javascript is turned OFF, your users simply request new pre-compiled, static HTML pages each time they click links or buttons. This is done by a module called "Angular Universal" (that is bundled with Angular 2)
5. Angular 2 applications are written in a language called TypeScript (built by Microsoft). TypeScript is an enhanced version of Javascript (and while it's new, it is widely supported by Microsoft and Google). But we like it even more as it is like a version of Javascript that Typescript also supports many Java-like concepts. So, we feel developers familiar with Javascript or Java will be able to pick up this new language quickly. It is also easier to debug (with many debuggers/editors) than traditional Javascript.
6. Finally, the Angular framework is the most popular / widely used client side Javascript framework. So, there are many opportunities for support, and many third-party plugins available for building/enhancing Angular 2 applications.

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