Why qtopia uses framebuffer and ASU can't?

[Leonti Bielski]

Hello!
Somewhere I read that Qtopia is much faster than other distros because
it uses framebuffer. So I have some questions:
1. How is it possible for qtopia to bypass glamo chip and write
directly to the framebuffer?
2. Is it possible to do the same with x11 server?
3. Is there other explanation(except for glamo) why apps are slow to
respond on 400mhz proc?
Thank you!