He was the prototype
OCP are so evil that they restructured the police department specifically to look for prime candidates for the robocop program. Murphy was pretty much dead upon arrival.
Also I think it's cool to think that he was the prototype, possibly the first of many..
Prototypes are normally problematic, used for testing the program and new ideas also to check for faults etc so Maybe that's why he still had his memorys because they rushed out the program within 90 days.. In many ways Bob is just as evil as dick. It's dog eat dog in that corporate world and I love to see it💪