I'm not throwing shade at BG3; I've also enjoyed it, but something about the sheer amount of options and more widely diverging story paths in Wrath just does it more for me. I also like the art style more, but that's strictly subjective and I accept that.
To a lesser and more personal extent, I despise Wizards of the Coast/Hasbro and their recurring attempts to monopolize and bully third party game developers and players alike and I don't like to even indirectly trickle money their way compared to Paizo. Yes yes, no ethical consumption and all that, but Paizo's way less fucked up with both distributing game materials and open licensing agreements.
https://www.polygon.com/23553389/dnd-ogl-paizo-orc-open-rpg-creative-license-announcement
That's all I had to say. If you've already finished BG3 or it wasn't quite to your liking and you'd like an alternative, give Wrath a try. 
I've played both, and one thing I quite like about Baldur's Gate is how there are fewer combat encounters but they feel more impactful. WoTR throws a lot of chaff at you, which can get pretty tedious at times.
All in all though, WoTR is a much more conceptually ambitious game, even if it's rougher around the edges in places, it does swing for the fences much more. Also the inventory management in BG3 is dogshit in comparison
I agree that BG3 has Wrath WoTR beaten there. It helps that pretty much every character that can be named is named, even if they're just scouts/guards for an enemy camp.