I liked that they showed him rip his head of with brute strength rather than using a knife. Thats more bad ass. As for the momo thing. Data is usually stored in the brain and not the stomach and since she is suppose to be a robot that resembles a human, it would only make sense that the data is in here head and not the stomach.

I always liked the edited version better because I always felt it made more sense and was more badass with the head getting ripped off.