No, the Edge PDF viewer has a much larger feature set than the Chrome viewer (although, I think sometimes for reasons I can't place PDFs opened with Edge do end up using the Chrome viewer instead of the Edge native viewer).

> I guess it is because Edge is using the one that comes with Chrome

Is it? As far as I can tell, Chrome just has a plain PDF viewer with none of the annotation/highlighting/commenting/read-aloud features that Edge has.

I missed Old Edge EPub reader. It was the best.