You crazy, God of War III has been crazy advertised since it's E3 demo debut last year. Even since 2008 when they showed that teaser trailer haha. I mean whether it has been putting it in mags, in store adverts, shown at events, demos in games (God of War Collection or District 9 demo inclusion on blu-ray), they have spent loads of money and time to keep this relevant in the gaming news and mainstream. There's no telling how much money they've already spent on marketing and we haven't even hit big time commercial advertising yet haha. No More Heroes 2 on the other hand has had very little of this. Biggest advert for it was probably when it was announced then it has been slowly and somewhat advertised for its release. I do expect some commercial advertising this time, but game has not been kept at the same levels of GoW III.
Should still have a decent opener as the core gamers pick it up, but obviously won't hit the mainstream immediately or the other core gamers that aren't as big into the industry as us. Not surprising because Ubisoft did the same with the first one.