yeah, for all we know the arrangement of their internal organs may be quite different...
for the blood, or lack thereof, Square didn't want to lose their T Rating to an M Rating resulting in a projected loss of sales to the 13-18 demographic... even though Mortal Kombat has shown time and again that despite blood, gore, & an M Rating kids will still obtain it, but that's American thinking and Square was a Japanese company and it was a different time in the industry...