@Blacksen

And YOU'RE forgetting that throughout Wrath of the Lich King, 25-man encounters were SPECIFICALLY TUNED TO BE HARDER.

This seems to be 25-manners favorite line... how much harder 25s were in Wrath. THEY WERE DESIGNED to be harder. They weren't harder "because they required 25 people". They were harder because Blizzard decided that 25-mans would be harder, and tuned them that way.

Blizzard isn't taking that line anymore. They are going to specifically design both versions to be of roughly equal difficulty. The only way they can do that is to make the output requirements equal. 10-man raids have 5 DPS (usually), so they balance a DPS race to require (say) 50,000 DPS for the first tier of raiding. 25-man raid usually has 17 DPS, so they balance the same DPS race to require 170,000 DPS.

10-man raid: 1 DPS screws up and dies halfway through. 10,000 DPS lost. 20% of total output. You're probably going to hit enrage around 10%. The other 4 DPS will have a very hard time making up for the difference, even if they push very hard. Do you commonly find is easy to ramp up your normal output by 20% over a long period?

25-man raid: 1 DPS screws up and dies halfway through. 10,000 DPS lost. 6% of total output lost. Every other DPSer only has to push themselves 6% harder to make up the loss. The raid still has a chance. Even if 2 people die, you've barely incurred half the loss that a 10-man would suffer from so much as 1 death.

That's what we are saying.

And for the love of God, stop touting the "omgz 1 death in H 25-man LK wuz wipez" because like I said, it was specifically designed to be harder than 10-man. You can't compare that to Cata, where the design approach is completely different.