its all busywork. A TE ore processing system is 'busywork'. This is what mystifies me the most about these discussions, GT and IC2 are EXACTLY like TE and other mods, they just extend the curve out further than others do.
And cross the subjective line between effort vs. reward well into "my god this is tedious" for a lot of people. There's craptons of mods in FTB, I personally really don't understand why so many people seem to focus only on GT/IC2 and accept the enourmous amount of time that it wants you to spend waiting and crafting while you could spend that time actually building stuff.
I think the main difference in gameplay is that I play to build factories, not play to build individual machines. Not saying that that playstyle is 'better' or anything, it's just difference. The "god GT sucks" crowd will never understand the "I love GT" crowd because for some the grindy parts are dead boring, and for others they're fun.