Its the same engine and the same rendering style, the same time period , by the same developers.
Of course it bloody looks the same.

However. Lets jog your mind. What game made today looks lke this?
Solasta doesnt, Kingmaker doesnt, Black Geysir also doesnt. None of them do.

Not even ToEE looks like this. Nothing does because the "look" is specific to the way it was made.

You cannot achieve this lookw ithout beeing pre rendered and having sprites.

At this point, you migh taswell say Warlords Battlecry 3 is a better successor to Baldurs gate because it looks closer.
Which it does.