they look like sci-fi weapons.
just look at the bow.
When I think of science-fiction weapons, several things come to mind, one would be something obviously high-tech, with lots of mechanical details on it, one is something sleek, refined, and simple, the key here being simple, and one is something with a greater emphasis on the "fiction" part of science-fiction like a lightsaber. Daedric weapons look simply like fantasy to me.
Daedric items are powerful in Tamriel like American items are powerful on Earth.
I wouldn't make that connection, since American items aren't made from the souls of Americans (at least I hope not
) Any advantage American made items might have over items from other parts of the world comes purely from the quality of the product (and of course, a lot of items made by American brands were actually manufactured in other places, like China.) not anything mystical in nature.
Morrowind handled the matter of obtaining such items very differently (and better, IMHO) In Morrowind, there were limited numbers of Daedric items that were spread out all through the land, and they were difficult to discover and obtain. If I remember correctly, even the original game neglected to provide ALL the parts of the armor (I think there was one particular gauntlet that didn't show up until one of the expansion packs came out.)
In the original game, one character had a full set of Daedric armor except for the helmet (of which there were several distinct ones.) but he was important to the main quest so it wouldn't be advisable to kill him to obtain them until you had no further use for him, so you could obtain all pieces in the original game.
And the missing item I believe was not a gauntlet but a pauldron, in fact, both gauntlets could be found in a dungeon which you would visit in the main quest.