verdant monkai said:
Conan and his hairy pants
Speaking of Conan, here is an infographic (courtesy of Women Fighters in Reasonable Armor) that explains a distinction you might find informative.
So out of the characters you listed...
Ryu (street fighter): heroically idealized
Kratos (god of war): heroically idealized
Marcus Fenix (gears of war): heroically idealized
James Sunderland (silent hill 2): realistic
Commander Shepard (Mass effect): depends on the outfit.
Snake (metal gear): heroically idealized (or arguably sexualized, depending on what mood Hideo Kojima's in.)
Mario (seriously?): none of the Above
Hawke (Dragon age 2) depends on the outfit.
Tidus (FF X): heroically idealized. (You could make a case for sexualized as well, but not a very good case.)
Master Chief (Halo): you could make a case for realistic or heroically idealized. I lean towards realistic.