This image explains it:
Left: Japan
Right: US
In the US people won't buy games unless they're full of gritty realism, anger and angst and a lot of macho tough guys and skimpy-clothed women! AMERICA, We like to pretend we're tough!
PS: Further evidence on how the US does not want HAPPINESS in their games, because being happy is for pussies!
http://www.n-sider.com/contentview.php?contentid=407

Left: Japan
Right: US
In the US people won't buy games unless they're full of gritty realism, anger and angst and a lot of macho tough guys and skimpy-clothed women! AMERICA, We like to pretend we're tough!
PS: Further evidence on how the US does not want HAPPINESS in their games, because being happy is for pussies!
http://www.n-sider.com/contentview.php?contentid=407