Its just a Rez bump and framerate bump on console. Even the wording from the publishers said 'Remastered in high resolution'.
Its the PC orig they have used in that comparsion, so it looks almost exactly the same, because it is. If they had used the 360/PS3 version, the comparison would of looked a lot more.
Its basically pointless buying the remaster if you are on PC, but probably worth it on console.