Came across this post while looking to chat about it! Hope you guys don't mind I join in!?
@Teigaga (sorry don't know how to quote) I think you also need to look beyond that though. For starters yes it looks extremely good because of the wet textures, and dark lighting, but look at how clean everything is. There is hardly any jagged edges on anything, the animations are fluent, and Snake overall looks near perfect. Now look at Phantom Pain, jaggies over anything round, Snake isn't exactly as fluent with his motions, textures in the distance are plain and become blurry fast.
I think the video someone posted on the first page kind of proves the overall point too. The only thing that looked terrible in the trailer were the jagged edges (aka lack of polygons) everything else the Vita could easily handle.
Also I don't know where people are reading it, but all the OP says is that the game could be coming to Vita. Doesn't state its exclusive anywhere? The only thing that really doesn't look like the Vita could handle was the doctor at the opening, but that could have easily been a cutscene.