Disclaimer: This is not me 'crying' about the raid or complaining at it's difficulty but clearly I'm missing something here....
So, I organised a Naxxramas 10 Man Run,
Had 1 Disco, 1 Rshaman 1 HPala for the heals.
1 Prot Paladin and 1 Bear tank.
Dps was Desto & Affliction Lock, Fury War, SPriest
All of us was @hit rating and geared entirely from epics farmed from countless Dung HCs. Gemmed, enchanted, food buffed pots, the lot.
So we walk into Naxxramas - Knowing the difficulty increase and expected a challenge.
I decide to head toward Military Quarter, the tanks knew their taunt rotations etc.
Cleared trash - No problem (no big surprise there) Got to Razuvious started the encounter, using the crystals - the crystals took control of the Initate DK's and we gave the tanks 20 seconds to grab aggro. I check the aggro table, totally fine - warlock drops a corruption and immolate BOOM instant aggro = 1 shotted, and consequently a wipe.
We heard that in 25 man the crystals don't (or didn't at one point) work correctly, having two priests we were able to test out the 'Mind Control' Controlling of the initiates, again decent amount of threat was accumulated over 30s, I drop a riptide on an initiate and instantly take aggro. We left that boss with a bitter taste in our mouths, and a hungering for Vengeance.
So we move to the Arachnid Quarter, it was not until later that I'd find the error in that move.
We started with the paladin on Anub'Rekhan and the bear taking the add, I admit we screwed up the first time, keeping the add up for so long the bear had 11 Stacks on him, the impale mechanic worked fine - throwing people in a cone from the boss up in the air, by this point heroism dropped off and the Prot paladin was receiving his entire hp pool in 2 rapid hits (even as he kited). And so Wipe.
We retry focusing the add this time, then letting the bear try and pick up the locust swarm, as he's picking up the little sods I have 1 on me, and it took >50% o my hp each time. Which I healed through however the MT died from them and the boss.
We Switch to bear tank on boss paladin on adds, the bear too WAY more dmg, and when he popped his dodge trinket after barkskin was over (putting him well over dodge cap) the boss never missed.
By which point we were all getting confused and frustrated, as Naxxramas 10 'should' (in my own opinion) be entirely doable with a raid in full HC dung gear with 1 or 2 Tier pieces.
So we set a little experiment, the bear tank buffed to 40khp wanted to see how hard Patchwerk hits (as he's the gearcheck boss) his Combat log read this:
Patchwerk hits Bear for 9345 (Physical)
Patchwerk hits Bear for 0 (10395 Overkill)
Now, my math doesn't have to be the greatest to see that Bear's initial hp = 40k - 19740 hit should not equal 0.
Now I know that I'll be flamed, and I accept that - however I just really want to know what I'm doing wrong here?