Originally Posted by
Kralljin
The issue of Cata Heroics is a bit more complex than just "the difficulty has been increased".
First off, it needs to be established that Blizzard wanted to recapture the essence of TBC heroics in Cata.
In TBC however, Heroics were not necessarily part of your core progression (at least for more casual players), you could still dabble into Karazhan / Gruul without actually doing the more difficult heroic dungeon.
Crafting, Reps and PvP offered alternatives ways to progress your character.
I strongly doubt that the people who actually did Heroics in TBC then suddenly failed to complete Cata Heroics, the people who failed in Cata heroics most likely never dabbled in TBC heroics (at least at a pre nerf stage).
Wotlk reduced these things and streamlined your character progression to Normal Dungeons => Heroics => Raids, meaning you struggled getting into raids if you skipped heroics.
Now, Cata used the Wotlk model and simply cranked up the difficulty, which obviously caused issues when you just increase difficulty of a certain mode, especially if that mode is now a key stepping stone towards raiding, if you failed to tackle heroics, your progression was effectively over, that was different in TBC.
On top of that, Cata heroics were simply mechanically more challenging.
In TBC, the Heroics were still pretty straight forward, the biggest difficulty was very often just the fact that Tanks could only keep aggro on 1-3 mobs, some packs had like 4-6 mobs and on top of that, 3 mobs could already put serious pressure onto your tank (in an era where def CD's were almost nonexistant).
The solution to that difficulty was very often to just invite a bunch of people with CC, it was a major issue for dps specs without CC (Fury, Ele / Enhance, etc..) to get into heroics because everyone wanted Mages, Locks or Hunters so they have like 2-3 CC spells to deal with big packs.
The Bosses themselves were very often just the same as the normal ones with more Health / Damage.
The Cata ones were basically small raid encounters where you had to dodge shit and whatnot, in a 5man setting, the death of a single dps could already lead to a wipe because the healer will go OOM or you're unable to beat some soft enrage mechanic.
Look at Erudax from Grim Batol, that guy has more (unforgiving) mechanics than some Ny'alotha raid Bosses on normal.
As said above, Blizzard wanted to recapture the magic of TBC Heroics, yet failed to realize that the overall structure of TBC made them not as mandatory as they were in Wotlk / Cata.
Cata heroics were not a return to TBC, it was just a Hardmode of Wotlk.
And the obvious one: Dungeon Finder, if there is anything we've learned from LFR (and by extension Cata Heroics) then that content which requires above room temperature IQ cannot be accessible via an automated queueing system.
I apologize for the wall of text, but there is just so much more to the issue of Cata Heroics than "they were too hard".