You can't loot bodies the same way as you would in Skyrim.
In Witcher when you kill somebody their body tend to disappear and a loot bag appear, from it you can get some random items, which aren't always the items you saw on your enemy. While in Skyrim if you saw a nice armor or weapon on the enemy, you can probably loot it from them and it will be shown on the body.
And from what I've seen, NPCs are pretty static, they don't tend to react to you. Best way to prove otherwise if you can attack them
And I've seen a couple loading screens too...
Ah!, but saying "you can't loot bodies" and saying "you can't loot bodies
the same as you would in Skyrim" is two different things, no?
And no, in Witcher you can't just attack anyone you want, simply because it is a story-driven game and the main character has an established background and it would not make any sense within the plot of the game. Yet, people know who you are, and acknowledge you when you walk by, and guards react to you when you pull out a weapon, or make snide comments when you try talking to them...
The mechanics of Witcher are different from the mechanics of Skyrim, period. because they are 2 different games. That doesn't mean one's better than the other. But if doing tehe "whose is bigger" routine, I'd probably choose Two Worlds II or Risen and not Witcher 2.