Considering we never see someone directly hit with a vehicle weapon in the movies or any canon source I know of, that I can recall - though the rail mounted gun in the sail barge is a 'maybe' example, we don't know the effects of vehicle weapons on a human sized opponent.
The reason we don't see someone hit by vehicle weapons in Star Wars is because the films are rated PG.
(except for RotS, which is PG-13)
But we can EXTRPOLATE! We see personal blasters bounce off vehicle armor (and shields), but vehicle weapons blow through shields, armor, and the craft underneath. We see blasters hitting people and leaving a blaster burn, usually lethally. If the vehicle lasers blast through materials that hand blasters can't, what is the logical effect if something more squishy is hit by those same vehicle-mounted blasters.
(Llogically) if someone is hit by a weapon designed for anti-vehicle combat, they'd be killed in a very violent and blood manner with body parts either vaporizing or blasting away from other body parts at high velocity. They're not going to show it in a PG film because it was a family film.
And you still didn't explain how you saw "your share of people hit by Hellfire missiles and walk away"... ![]()