Uhh, RE2 is a remake of a classic game and is very tight in its experience. Pacing, level design, etc. Also 10-12ish hours to complete (this should also be a "travesty" and "way too short" by the standards for modern games, but I digress).
Days Gone seems to just be checking all the standard modern boxes: zombies, survival, dynamic world, rpg-lite elements. Maybe some classic Sony walk n' talk (Uncharted, TLOU, God of War). I've yet to see what it really brings that's unique. But, that's all without really seeing significant gameplay or reviews. It might just turn out to meld together in a way that's much better than Dying Light or State of Decay.
Lastly, they also don't make a lot of games like RE2 anymore. Frankly, I think it's a masterpiece of game design.
That said, I hope Days Gone is really good. I even have it preordered. But if the reviews reveal my fears to be true I will have no problem cancelling.