Both are successful. However, Pathfinder now has 2 successes. It is gaining ground. I think the point is that if Larian is not careful, if they don't appeal more to the D&D audience, they are going t lose them and a ton of valuable revenue in the future. D&D fans are numerous, and though DOS fans are too, Larian will lose a sizable chunk of their fans for the BG series if they don't listen to D&D fans also.
Trust me. There are plenty of us who want more BG games, but I'd they don't give us more D&D in BG3, we ain't buying any future BG games. I don't care for the DOS style gameplay. It's not Forgotten Realms. Say what you like, but it's not.
That's very extreme views, which I don't think many share. I consider myself D&D audience since I played it since AD&D 2e times but I'm not purist, and for me the game is quite FR. I always have a tendency to modify rules if I feel that the original rules can be improved or fixed. For me in RPGs plot consistency always tops mechanical details if later don't break the game.
Modifying rules only makes sense if it is to improve gameplay. Larian's hybrid DOS/D&D is still a mess and far inferior to a strict implementation. Until a year ago this was still a theory, however Solasta has been released since. We can compare 5e implementation directly, and the single aspect of Solasta that was praised even on negative reviews was the gameplay, whereas it is still the most criticized aspect of BG3. I agree with @GM4Him that this might drive D&D players away, and they are far more numerous than DOS players, that I believe would've bought the game anyway just by being TB.
