Yap it is.
But that is very time consuming.
I think there is not much difference between the two games.
The point is, that they re both using the same types of Files ( .alo, ala, tga, dds ... ) the only Difference i could imagine is the Construction of the XML Engine.
Ok, you could use any Foc Unit for Eaw too, but you probably have to rewrite the XML of that Unit from Scrach.
It would be a hard Work to convert a whole Mod to Original EAW, but it would take between 1 to 5 Days to convert a single Unit ( depending on the Coder ).
I like the Original EAW too more then FOC, becouse i hate the fast Gameplay.
So i think I will tinker a littlebit on the projectiles.xml ( = Weapons ) and the Tactical Health of Units, in order to make Foc feel more like the original EAW ..