Hi At the present time, the biggest advantage of Firefox for Android over Chome is that it is an open source piece of software produced to help make the web better without lining the pockets of corporate shareholders. We have (we believe) better functionality that protects your privacy and security as well as a large community of people (just like me) that help build and support it. The speed of a mobile app is often dependent on the ISP or cell network it is running on, but we hope to be doing further work in the near future to make the app work even faster.