I don't think that comment was addressing numbers. I think that comment was addressing behaviors. In that there are large numbers of tanks and perhaps a slightly lesser number of healers that prioritize dps output over their actual role. While doling out damage to the best of your ability is pretty much always ace, it should not overshadow your role to the point of expecting others to carry that burdern so you can maximize your personal numbers. This whole 'party is responsible for emnity/mitgation' is just enabling this type of behavior. The party is responsible for working together to the best of their ability to clear the content--whether that also includes meeting each others expectations of what that exactly entails is ultimately up to the participants. Supporting each other, whether its by avoiding unnecessary damage or being aware of your personal enmity or using party buffs or just adjusting to party performance is what we should be doing instead of focusing on just damage. Period. That seems to be how we judge success--not how well we performed our job or helped the party or came through a less than ideal situation but DEM NUMBERS YO.

I'm pretty sure he's talking about that and not how much damage, number-wise anyone is actually doing.