Originally Posted by
PraisetheSun
Yes, and that reason is Blizzard being complete fucking retards with the SoO loot tables (arguably a bigger travesty than BiS weapons being shared boss loot in ToT), not a matter of tuning. Normal definitely isn't tuned for cloaks, but speaking as someone who did Heroics the first week they were available in 535ish iLvl, the bosses beyond Immerseus wouldn't have been killable at that iLvl without cloak.
The only reason they're even killing shit without cloaks atm is because they overgear the first bosses by 20-30 iLvls even without Legendary cloaks, not because HC SoO isn't tuned for cloaks. The first few HC bosses are tuned for 540ish iLvl with cloak, and perhaps 550 or slightly above without it.