no you are correct about the SHIELD agents froth, i forgot that he didn't get taken down until he lost the will to fight, he was still affected by getting hit by a vehicle tho, and if i recall he did have some trouble with the last guy he fought before he got to Mjolnir so either way I don't see Loki being able to handle regular humans if Thor, who is stronger and a better fighter had trouble with even one human while depowered.