LeBron:
+8.84 in 2009 (would be 4th all time), +9.73 in 2011 (would be 2nd all time), +9.5 in 2012 (would be 2nd all time), +6.4 in 2013 (would be 13th all time), 6.79 in 2014, 8.7 in 2015, +8.62 in 2016 (would be 4th all time), 6.62 in 2017, 1.56 in 2018 (holy coasting! wow!), 3.44 in 2019.
Jordan:
+7.47 in 1988 (would be 8th all time. 43 game sample where Bulls just barely performed better than their average season level), +6.40 in 1991 (57 games where Bulls drastically underperformed their average season level), +7.17 in 1996 (21 games sample where Bulls performed at their average season level), +5.85 in 1997 (full season sample), +6.15 in 1998.```
The data isn't complete, but so far lebron has 4 different seasons that score signifcantly higher than any of MJ's. Is this just noise? Or does this suggest Lebron was more impactful?
Interestingly while all of lebron's defenses seem to collapse when he leaves, the bulls got much better defensively between 89 and 91 as jordan's defense was declining and were unaffected defensively in 94 when jordan left. So maybe defense is the difference here? Jordan hasn't actually ever anchored elite playoff defenses while lebron arguably did in 09, 11, 13, 15, and 16.