Our DK tank started a huge wave of QQ because I outrolled him on warforged Gorehowl today. I had Sha of Pride sword and he had Thok polearm, both normal.
AFAIK, weapon damage has no effect on blood DK survivability, and most of tanks' damage and threat comes from vengeance. For melee DPS, weapon damage is obviously the most important thing, and higher ilvl automatically makes a weapon better even if it has worse secondary stats.
Now he is insisting that I should pass on the first heroic 2-hander that drops, no matter what secondary stats it has. I think it benefits the raid far more to give it to a melee DPS, rather than a tank that never has had any issues before with his tanking. Is he just extremely greedy, selfish and butthurt, or does he actually have a point?