Having played a bit of both games, i can report I like them both, but both have immersion issues. The good news for BG3 is that there is still time to improve the design in that respect. Something BG3 already has going for it are the close up views of characters. The characters in the game, both companions and others, come much more alive if you can see their faces and their expressions. For both games it is still too early too tell for me, but I think there is also an advantage to be had for BG3 in the area of character development. Well designed characters will develop and evolve as a result of their in-game experiences.
An example of poor immersion in P:WotR was a big fight to defend a tavern. The fight itself was very nice, with wave after wave of incoming baddies (I would not mind seeing such big scripted brawls in BG3), but the preambule was horrific. We were told to prepare for in imminent attack on the stronghold. OK, that means keeping weapons and spells at the ready, right? Then we meet a messenger saying that the attack is about to begin. We race back to the tavern, glad not to be caught with our pants down. But inside the tavern we can casually buy stuff and even go to sleep for more than a day. Then it is us, instead of the attackers, that start the battle by selecting the appropriate dialog option. To me, that looks like very bad scripting.
