Yeah i´ve seen the E3 demo of Assasins creed Blackflag on PS4 the console was lagging and kept freezing during dialogs - was kinda like the surface presentation just worse 
What i liked was the fact that you can do with your purchased game what you want rent it to a friend or sell it also the fact that you dont have to be online or the need to authentificate your copy was pretty sweeet. Destiny was the game aswell as FF that gained my interest.
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Edit:
Need to correct myself: Turns out that decision of DRM Protection is still in the hands of the publishers or developers ... so it’s not assured to have DRM free content all of the time on PS4 so that statement is also part of the marketing campaign over at E3 and can’t be taken serious.