You choose the most minor, superficial things to say it looks nothing like DOS.

If you took away all marketing and intros from the gameplay, and put that video side by side with DOS on one side and BG on the other, and showed those videos to someone who has never played EITHER game ...

can you honestly sit here and say that they would think it was BG?

"D&D" isn't enough of a differentiator.

They are party based RPGs, setting is kind of irrelevant to the mechanical "game" part of the title, as you can have a D&D setting in ANY kind of game, and likewise an RPG could have ANY setting.