lacktheknack said:
What the hell was the point of that?!
Seriously... couldn't they have done something better than prove that mothers don't like bloody horror games?
It's humor. A joke.
A joke is funny, because it sets up a familiar pattern. In this case, moms not liking video games. A joke can then either avert the pattern, which is unexpected and can make you laugh. That would be if the moms enjoyed the game, or at least some of them. The joke can also play the pattern straight, to ridiculous degrees. That is done in this case by having over 200 moms, and a very scientific-looking set up.
In fact, taking something commonplace and acting as it is very serious or important is a comedic staple.
The purpose of this ad was to make the viewer laugh, which causes a release of endorphins and makes the person happier. The developers are hoping this assosciates good things with the game, which will make the viewer wish to buy it, thus funding the developer.
The ad also showed several clips from the game in order to entice the potential player. On top of that, much of the core demographic revels in violence or horror. Showing how horrified people are of it would potentially make them desire to play.