Spent 2 hours on Revan alone last night. I tanked it and my gear is fairly good and should be perfect for Hard modes (Half 50 epics and the other half 49 epics or 50 blues). Beating him is complete RNG. This needs to be fixed. I have no idea how this fight passed Quality Control.
I haven't complained at all about this game thus far, but the bugs with the final bosses of BP and Foundry need to be fixed ASAP. If a patch hits and these haven't been addressed, I will be very disappointed. It holds the empire players at a standstill.
Have fun in Hardmode/Nightmare raids.