The website originally passed a notability review resoundingly, with roughly the same evidence that could still be provided. This most recent nomination only received a Weak Delete, which was actually factually incorrect (http://en.wikipedia.org/wiki/Wikipedia:Articles_for_deletion/N-Sider).
The site's content was never re-written. The discussion in the weak delete proves as much, which put the site up for more discussion to reach a consensus, though the consensus did not actually disprove any notability, but just offered a suggestion for a redirect.
Here's one article that clearly shows the articles were not "rewritten" by IGN, the content was distributed: http://www.n-sider.com/contentview.php?contentid=247 http://cube.ign.com/articles/536/536510p1.html
Again, the site already passed this notability check the first time it was up for deletion (this was the second, though that page seems to have been overwritten by a move of TenPoundHammer). The site passed then, it still passes now, it fulfills all notability requirements and the discussion on deletion did not reach a factual consensus regarding any notability requirements or http://en.wikipedia.org/wiki/Wikipedia:Notability_(web)#Criteria this point in specific. The original page was based on slightly different spelling in the case of the letter S, so I can see why this discussion would have been missed: http://en.wikipedia.org/wiki/Wikipedia:Articles_for_deletion/N-sider