If walls-of-text were subject to gravity (or Larian environmental shenanigans), this thread would be deemed a hazard zone lol. So let me be short and sweet.

Of course it will be better. Not even a contest!

Mini wall-of-text: Will it be as good relative to its contemporaries though? Probably not so much considering BG pioneered the cRPG genre and overdelivered besides. Storywise it's hard to tell, the original BG-series was a pretty stereotypical rags to riches story. You started out hunting rats in a warehouse, and ended up akin to a god chasing demons in hell. Part of the secret sauce was developing a relationship over several games over several years - much like in the Mass Effect series and it would be unfair to compare BG3 after just one game. Especially with the rose-tinted glasses of old fans who just as much miss the naivete of youth. BG3 is akin to Bioware of old though: Great focus on roleplaying and party interactions, just taken to the next level and then some. If you hate Bioware - you're likely not to love this.