Pretty apparent you haven't even played the game. That video trailer you posted doesn't prove anything, they didn't even fully utilize the sword summon as the gif did. A video trailer that lacks something doesn't disprove stuff I already showed you from the actual game.
Also, motion blur doesn't magically add in a bunch more particles, so I'm not sure what your line of thinking here is. The particles in that gif are there because they actually exist. In fact, that gif doesn't even showcase the game at a full-on all out particle party that it's capable of. The final game completely trounces any scene with particles in that 2013 trailer.
If you think piss yellow lighting and overdone bloom are photo realistic then sure. Real-time lighting is universal, if the dynamic moving objects like characters have horrible lighting but yet the static environment looks decent, then they pre-baked the lighting for that city at that time in development on worse engine. There's nothing impressive about that or anything to brag about, especially when the final game has completely dynamic GI and 24h time of day transitions, yet actually manages to look more photorealistic while at it.
2013
final
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Some last-gen looking baked light textures on the building in that 2013 footage.
Dynamically lit in the final version looks considerably better.
Check again, even the hair model isn't the same. Post shaders aren't going to change the mesh and weird body proportions the pre-rendered trailer has.
I don't think you understand what the word scale is. Horizon doesn't come anywhere close. Funny you try to downplay that e3 trailer though, because Horizon's destruction and set pieces are highly simplified compared it, none of which even has the draw distance or visual density of that city battle. And the biggest city in Horizon is miniature sized compared to the Venice city in the trailer.
Every game out now looks downgraded form that pre-rendered trailer.