> 2. Android in particular is really nasty at the low end. The quality of experience you would get from a tightly optimised and simplified Firefox OS would be immeasurably better.
Firefox OS is worse here, not better. Gingerbread runs far better on low end hardware than Firefox OS does. The later Android stuff is more demanding (particularly in RAM), but the performance target (60fps everywhere, low latency) is also much, much higher than what Firefox OS is capable of achieving.
Firefox OS is less efficient than iOS, Android, or WP. By a lot.
Firefox OS is worse here, not better. Gingerbread runs far better on low end hardware than Firefox OS does. The later Android stuff is more demanding (particularly in RAM), but the performance target (60fps everywhere, low latency) is also much, much higher than what Firefox OS is capable of achieving.
Firefox OS is less efficient than iOS, Android, or WP. By a lot.