This sort of message I see all too often going around in trade chat. And every time I see it, I wonder what it means that you're full on DKs. If you need dps, a DK can dps, right?
But I guess they're going by their own greedy self. If I were a DK, I wouldn't want to share my loot with too many others....
Lets say you go into ICC25, and you have, 2 Death Knights, 2 Ret Pallies, 1 ret pallie who's going as prot since you were short a tank but will roll on ret, and 2 warriors...
Within the group of 25 people you're rolling against 6 other people for your gear. But for some odd reason people are fine with it. In fact, this is still pretty good. There are quite a few raids where the cloth wearers roll against 10 or more people. Worse at times for token drops.
Yet, most raidleaders decide that when they go into VoA25 they cannot have this. They refuse to bring more than 3 of a certain class or so because of fear that they're rolling against people. They will hold up the raid for a long time sometimes, while they've had 10 or more whispers, just because they don't want to bring more of those classes.
I've once been in a raid where the raidleader kept holding off because he refused to bring more of the classes that he already had. This was at an ungodly hour for my server, and chances of him getting the classes he wanted were thin already. I was not doing anything special so I watched how it developed.
Well, he held off so long that by the time we had 23 players, the Wintergrasp battle was 15 minutes away and the raid disbanded.
Stop being silly people, and look at it rationally. You're going for badges, and if you happen to be so lucky that out of 10 class options, your gear drops, then you might just be lucky enough to win the roll against those 4 others as well. Just as in other 25s.