Well there is nothing to related with limited H/w I believe,

Because MFC is just a collection classes designed using the

Windows APIs , to provide ease of use.

So the proper answer may Be...

To design any application on mobile.. We have very limited

APIs which user can directly used. Generally in Embedded

system (even in Soft RTOS also ) , if application design

using less ( comfort )layer like MFC ( and other if it is

there :) ),then your aplication would be more efficient.

That's why even today's era... The application written in

Assembly is the most efficient application then others.