When I went back to BF4 this week after playing Hardline the night before I immediately noticed sharper graphics I believed.
I'd have to compare them to be exactly sure, but I just happened to feel like I noticed a fairly big difference when I went back to BF4.
But it could just be a different design aspect as well and not just graphics.
But to me Hardline seems to have a "haze" or "blur" about it with dark tones, where BF4 is seems more crisp with sharper edges and brighter, more vibrant maps.
I've probably not played all the maps on Hardline.
Hardline reminded me of the Close Quarters DLC with some of the maps btw.
Also I seemed to notice some weird aim assist buggies or something where my gun was not going where I aimed it.
I've barely played the game though.
Curious to see if Best Buy lowers the price this weekend to where I could get some $ refunded to me, as I still have not returned it yet. That way I might keep it a little longer. I might want to try the campaign since the first mission I did seemed okay. But I'm not much of a campaign guy.