We never said it wouldn't do it, but rather said it would not be enough power to play todays top end games with decent frame rates. IE, Battlefield 3, Metro 2033, Dirt 3, ect.
The first game he played was the first Dirt. DirectX 10 game and you cold probably do Eyefinity with a 5850 on that game.
Second game, Modern Warfare 2. Based on the overly used and very old CoD engine, yea, shouldn't have to say more. With that being said, I'm not sure if it's the video (probably) but it looks like he isn't using max settings.
I never played Batman, so can't comment on it.
Torchlight, older DX9 based RPG with low system requirements. Again, nothing more to say.
So basically what he did was demoed a bunch of low end games playing on a few big TVs showcasing a card that has relative performance around that of a 5870. Lets put it this way, in triple monitor Eyefinity on BF3 a 7970 stock has to do medium settings with no AA to get between 50 and 60fps. If you want to play older games that support this or want to play higher graphics games on low settings then sure go ahead and get this card. We are simply saying, it isn't enough horsepower to run 3 monitors and have all the pretties turned up.