Been debunked by Rangers. Is PC footage.
No, that one is almost certainly real 360 footage.
The other video I was talking about was one posted on Neogaf as 360, but it's not. The two giveaways are that it was dated Feb 14, and that the machine gun made "farting sounds" which is what the PC leak does (audio glitches). So it was PC leak on 360 controller. It also looked really really good, heh. Too good apparently.
The embedded vid above, and the other intro vid "Almighty05" posted are real 360 footage. They contain no audio glitches like the PC leak, they have pop in like we'd expect from console, they have 360 button prompts, they contain footage not seen before (besides from pc leak, but we already know it's not), they're dated March 18, etc.
This is the intro movie on 360 too. But be aware of course now we're pretty spoilery
http://www.youtube.com/watch?v=f-w2yr646XU
There is a PC C2 unboxing I already linked on youtube, so the game is already in some europe stores which is not surprising, that and both console pirate editions hit the web today. Bottom line is it isn't surprising footage is popping up.