BG3 was total crap besides graphics and combat
Nobody gives a shit about voice actors in marketing. Games succeed or not because of the quality of gameplay
BG3 had such a huge success only because they promoted it as a light-hearted adventure with focus on romance and characters.
These are the 4 most popular videos on the Larian YT channel. There's about two seconds of combat in the launch trailer and it's not shown from the isometric perspective with UI, it's just a zoom in on a "cool" spell.
Real footage of combat appears for the first time in their sixth most popular BG3 video. The preceeding 5 are all focused solely on the story and characters.
Out of the 20 most popular BG3 videos released by Larian, 18 do not show combat gameplay.