I'm not quite sure why you quoted what I said.
Since I was agreeing that we don't need DX11 to create good looking games. And the extra features of DX11 don't add a lot to making games look any better than they can in DX9, especially since the volumetric effects can be done via PhysX.
DX11 was supposed to make game code more efficient, but there is always a frame rate penalty for enabling DX11 over DX9 in the games that offer it. So it's just another marketing gimmick if you ask me. There are loads of comparison screen shots I've seen and most of the time you need the differences pointing out to you.
I quoted you as from everyone who has tried dx11, it makes a vast difference.
You don't NEED Dx11 to look better than DX9, its irrelevant, but as i said, if the developer chooses to only add things under DX11, then the game would look better under DX11. As for volumetric smoke, you don't need physx or dx11, its just easier under dx11(or 10), physx however is generally taking effects we've had for 5 years, recoding them to run like horse crap, and making them an "option" for Nvidia users where the code runs like horse crap on everything, including an Nvidia gpu, but a gpu is many times faster than a CPU for unoptimised tripe that is physx.
Plenty of games have done good smoke/mist/fog, plenty have done it without physx and without a big performance hit, and plenty have done it well.
I'd pretty go with my go to game that is Mafia 2, physx kills performance, and the effects are AWFUL. Watch video's of the glass exploding, its not real time, its not realistic, it doesn't look fantastic, its something that we've seen for a decade and all of a sudden its missing and can only be added back in with a performance penalty? In the case of the glass in that game, you can literally see a bullet hit glass, the glass disappears, there is a delay, then the SAME exact effect happens no matter where you hit the glass. Its predone, its prebaked, its not realistic, yet kills performance..... because physx is all about realism and tracking every particle etc, etc.
Anyway, played the game a bit, its okay, started off a bit, meh. I guess I've not played AA in a while, the combat feels so consoley, but then I'm sure AA did.... probably helped that I played that one on a console and not the PC
Got it off greenmangaming and had assumed like other games from them it would be a steam key. So I've got yet another downloader, though its fairly basic and unobtrusive but jesus christ did it take ages to install. Installing meant decrypting, which took ages then installing, which took ages. THen you've got the fantastic setting up windows live rubbish, new install so not done that in a while, go in game, update live, exit game to update live, in and out and in and out.