I have some expertise here as a former paramedic who has been first on scene to several of these where witnesses saw the whole thing. 75% get pissed and fight back hard with little effect of being stabbed, still pretty ok when the medic shows up. 20% pretty badly hurt, fight back a little, eventually crumple mostly from fatigue rather than pain/debility, still pretty together when I show up. 5% severely injured, crumple nearly immediately due to blood loss or collapsed lung, dead or on the way to it when I show up.