I'm thinking you probably shouldn't comment on the tech side of a games graphics then

. Especially if your diagnosis stops at hi-res textures used for bills/photos.
How do you compare a game with massives amounts of metals, glassware, more "modern" appliances and buildings, to an era full of basic things like clay vases and a limited time-period based level of decoration?
The environments and settings in the two games are darn near exact opposites of each other.
The only thing one could really compare may be
animation and character model detail. Even then, you have gritty metal/armour vs layers of cloth. Again, that's not really comparable material wise.
They're both top notch in those two areas.