Marksmanship is very important and should not be dismissed. If you are a crappy shot on a flat range with zero stress, your ability to make hits on any size target will diminish greatly in an actual shooting...especially a target that is making great strides to shoot you or avoid your shots.
A lot of Trauma Nurses, ER Doctors, and people who shoot people will disagree with this. The human body can take a lot of wound channels. I mean a lot and still be a lethal effing beast. I suspect you already know this, but it is worth repeating for those that like a lot of action television shows.
Yes. I agree with this.