Baldur's Gate 3 is not the most tactically satisfying CRPG I've ever played, it doesn't have the best writing, other games have more interesting stories and do certain mechanics like exploration to a far more interesting degree. But what makes Baldur's Gate 3 so great is that while it doesn't do any of those to an A+ level, it does just about everything to the level of a B+. Most of the games which do certain aspects better than BG3, have big deficits in return (Planescape Torment has incredible writing in exchange for weak gameplay) but nothing in BG3 is sacrificed. And it has an A+ area of its own, which is the companions.

If the individual aspects of BG3 are analyzed you find a bunch of "good but not great" systems. Taken as the sum of its parts however, and Baldur's Gate 3 is truly excellent.