They were
"Undergeared".
As for me, how BC Classic will turn out will depend on two things :
1) Will we get the un-nerfed but fixed 2.1 content or the 2.4.3 destroyed one ?
2) Will Blizzard actually do something to prevent abuse (like perma-drums or rotating heroism) ? Or will it be like Classic with the world buffs allowed to destroy the whole game unchecked ?
BC was my favourite expansion, but that's because of the early design, not the late one. I'm not interested in getting a WotLK-like full of abuses.