The only thing that matters is Nightmare btw.
Normal mode in SWTOR = LFR in WoW
Hard mode in SWTOR = normal mode in WoW
Nightmare mode in SWTOR = hard mode in WoW
thus Nightmare is the only thing that matters as all else is pathetically easy. :3
Dont forget that this is all 8man. 16man content is ridiculously more difficult than 8m.