We spend so much time talking about "skill" in the narrowest of senses possible in order to bend over backwards to call Durant equal to or greater than LeBron...
•you couldn't get physical with 33-year old, Y15 LeBron, and certainly not when he was younger, because physically you can't beat him up. He's going to win that matchup, pulling him and grabbing him off ball, bumping him and pushing him, didn't wear him down. He was too strong for that to be a limitation and during the meat of his MVP-winning, Finals-leading prime (2008-20) he drew 7.7 FTA in the regular season, 8.7 FTA in the playoffs, hitting at 74%, meaning even if you tried the "let's beat him up" tactic your guys were getting sent off the court in foul trouble...
This is as much a skill as any other basketball skill, the physical endurance coupled with foul drawing...
•you certainly would be risking your team's basketball livelihood to double Bron, his court vision, passing, and game control were in another stratosphere from the best Durant ever exhibited on either front. Double LeBron and more often than not you were getting burnt because many times he either saw the double before it hit home or he manipulated the advantage in his favor...
These certainly are relevant basketball "skills" that neither are spoken of often nor are skills perfect basketball player Kevin Durant (that's an actual quote repeated many times on here) possesses at an elite level...
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Boston's doubling and physicality are just copying blueprints to how to limit Durant that have been out for years, that he doesn't have the luxury of avoiding without Steph and that amazing GS system with the perfect complement of players around him to cover his warts...