The new trailer released today by The Last of Us, was stunned by the extreme attention to detail and overall quality extremely high. 

The first thing we thought was in the newsroom is that in computer graphics. For the avoidance of doubt, I personally contacted Eric Monacelli, community manager of Naughty Dog, saying on twitterthat "the new movie theaters is very nice. I think is CG-executed engine, the details are too high for real- time on the PS3. "

The answer is rather: "is a movie entirely in-game!"

So the video was captured by the title running on PlayStation 3 and, as it did with Uncharted 3, the cut scenes are rendered with the game engine making the most of the computing power of the console, which can in these phases have the better hardware, not occupied by gameplay.

No it's not. CGI != in-engine.

If this is the best they could do with CGI, then they should be ashamed, but if it's in-engine (Which it is) then this is good.