Oh Snake, we've been through this before. They were also compressed to hell jpgs of the console version. Which were terrible for actually measuring IQ. We also have console screenshots know, (xb1 version at least), that do a much better job of showing off the actual IQ you get from playing the game.
I'm with Sn4ke on this one.
The pre release shots vs the actual in game footage were downgraded.
Not to a major extent, as in a I felt cheated but to an extent that if you looked for the downgrade then you'd find it.
AC:Unity's lighting was left unchanged though which I thought was nice.
Anyway there's a clear downgrade here, in foliage, LOD and texture work as well as its clear assets have been replaced.
But also as others have said, Devs have to make these choices in order for the game to remain in a playable state (watchdogs took the piss though) so I'm not one bit mad.
This game still looks really good considering the amount of detail that is in some of these screens!
My pre-order is still ready to ship!