I think it's important to remember the context of the time in which both NX Gamer and Alex's DF video were made. The former was made in the context of already knowing that the game will be delayed to...god knows when, so there is an opportunity for some major improvements. When DF made their video, the underlying assumption was that this title was still going to be released in November, so the amount of changes possible to fix it up in such a short amount of time were much more limited.