Re: What people DIDN'T like from The Avenger ........Spoilers - Part 2
I agree, definitely fatal to a normal human in street clothes. Likely fatal to Black Widow in even her (kevlar?) suit. Likely serious damage to Cap out of his (kevlar?) suit. Knocks him off his feet and the wind out of his lungs even with his suit on.
They are undoubtedly more powerful than most human-made weapons. Its probably similar to the Hydra weapons in CA:TFA. Which disintegrated humans upon contact. But with their protective armors its just an impact blast. After all, look at the damage the Chitauri rifles do in Item 47.