1) I'd give Zelda being more impressive. Yes, Horizon is graphically impressive, but to dismiss Zelda's art style, which has been discussed during the Treehouse, is like dismissing a different kind of art. Zelda is focusing on an art style that really makes the world stand out. Sure, the graphics aren't 4K or realistic, but does it have to be? Plus, I'm seeing this new world of Zelda and I can't wait to explore this world.
2) Uniqueness is a tough one because I don't know what kind of uniqueness are we looking for. Zelda looks unique because it is really showcasing an evolution of the original game from 30 years ago and providing a new experience in exploration. Horizon looks unique in terms of combat.
3) Intriguing will probably be a tie. I know the Zelda franchise more and the Treehouse has showcased some sense of mystery into this game. Plus, this whole "breaking conventions" for Zelda gets me interested in what more are they going to do to let this game stand out. At the same time, with Horizon, I'm kinda intrigued but I'll wait to see more. I think I'm more intrigued about whether or not Horizon can deliver, mostly because I know Nintendo EAD has rarely disappointed when releasing its biggest games and that Horizon is a new IP by Guerrilla Games.
4) Fun, depends on what you define fun in this particular medium. For me, I think I'll go with Zelda because it still has the Zelda charm in which you can still smile and feel like you're on an adventure. As for Horizon, I hope it can provide it's own sense of fun.
In the end, we are entitled to our own opinions. Just don't downplay one or the other games. They both look great in their own right.