Performance – depending on how many "Ad-ons" or "Extension" you have the performance varies. Overall Chrome is faster, because it runs each "Extension" and/or its service(s) separately; where Firefox combines and runs them together. You can view how many processes Firefox vs. Chrome is running from Task Manager (to open Task Manager – Ctrl+Shift+Esc or Ctrl+Alt+Del), you'll notice that Chrome will have X amount of process(es) at different RAM usage vs. 1 (one) Firefox process. Although once Firefox starts-up all its services then it is all good to go.
Privacy – it is easy and simple to view/edit your privacy setting on Firefox; where you have to look and understand under Chrome's settings. And almost every time Chrome changes its settings view, which confuses or makes it difficult for users to adapt for a new look of its settings.
Bookmarks – it is easy to access bookmarks from Firefox than Chrome, because Chrome stores and uses a lot of cache, and also since the address bar serves as a search bar it accesses limited bookmarks.
In-browser keyword search – Firefox has a nice feature of "Search for text when I start typing" that allows you to search for keywords without pressing Ctrl+F.
Privacy – it is easy and simple to view/edit your privacy setting on Firefox; where you have to look and understand under Chrome's settings. And almost every time Chrome changes its settings view, which confuses or makes it difficult for users to adapt for a new look of its settings.
Bookmarks – it is easy to access bookmarks from Firefox than Chrome, because Chrome stores and uses a lot of cache, and also since the address bar serves as a search bar it accesses limited bookmarks.
In-browser keyword search – Firefox has a nice feature of "Search for text when I start typing" that allows you to search for keywords without pressing Ctrl+F.