Supremtin: yh and 4k magically improve the texture quality plus add all the effects that were taking out of the game which you are clearly avoiding, btw you know the video I linked was at 1080p that and the first 3 trailers of the game?, and yet they look way better than whatever youre seeing at 4k, if you clearly think the games comes close to the earlier trailers then youre just a troll and arnt fooling anyone
/sigh Sure, I'll bite.
Anti-aliasing improves perceived texture quality. The effects are still there, though if you're playing on something old and feeble, perhaps they get scaled down to nothing. I assure you, nothing you linked looks "way better" than what I'm seeing at 4k, except the post-processed, not-in-engine stuff, which of course looks different. If you're in Chattanooga, come on by and have a look yourself. =)
I mean, really. Do you watch the intro cinematics for Blizzard games and then freak out about the in-engine stuff looks worse? That's missing the point entirely.