We've evolved in the way that we evaluate players with the creation of TS%.
Kevin Durant is scoring 26.0 PPG on 58.7 TS%. He is scoring both very high in volume, at a very high efficiency. He is a legitimate top scorer in the league.
Compare this to say Jalen Rose with the Bulls in 02-03, he averaged 22.1 PPG but on 50.8 TS%. That's no good, that's just scoring a lot because you're taking a lot of shots, not because you're a good scorer. That doesn't describe Durant.
Or Zach Randolph in Portland. His last year, when he was averaging 23.6 PPG, he got his TS% up to an "okay" 53.7 TS%. Nothing special, just scoring because you're taking quite a lot of shots. His other years in Portland? He was bad in scoring efficiency. And they wonder why his teams suck...because in addition to his bad defense, he was never a good offensive player.
Or Al Jefferson in Minnesota, yes, he is averaging over 20 points a game, but his TS% has just been in the 53's TS%. That's just "okay", that doesn't make him an allstar level scorer. No mystery why Minnesota sucks despite having a big man who scores 23 points and grabs 11 rebounds, because that guy is only an average scorer efficiency wise.
Kevin Durant on the otherhand is a very special scorer. The jury's not out, he has proven he's a really good basketball player, at least on the offensive end.