The alliance is on average dominating the horde on Warsong because of the crippling faction imbalance, and I come in there giving you a f****** hard time in BGs. There's your challenge.
I don't exactly know what you're trying to say with the rest of your post, but if you're referring to frost vulnerability debuffs, just no. They only increase the damage of the DK who owns them, and if they didn't just do that, it still wouldn't have anything to do with multiboxing, it would just be a bug.
And if you're still trying to argue why the screenshot of 4 different people each playing a frost had less damage per toon than multiboxing screenshot, well you should understand that you can only do damage when there's stuff to attack, the same way you can only heal something when it's taking damage. Of course I end up doing alot of total damage when I'm against 3 healers, and the alliance had none in that one gilneas BG I put up as example.