BTW, an important point you have forgot to address is the damage done by bullets and their interaction with armor. Normal humans can take multiple shots from a handgun without even being severely crippled; of course, they have to be lucky enough to not get hit in the vitals, but that still counts as surviving. A mid-tier character would be capable of much more with proper armor and speed, a vest with ballistic inserts allowing to take a few shots from a rifle and proper footwork and movements would allow to dazzle a gunman and prevent him from inflicting any serious damage with the bullets that hit.