I have to stop for a second and look at a few things. There's some misconception by certain folks above that Lebron never had benefit of a "True #2" or as good a supporting cast as MJ had.
You might be surprised to know that Scottie Pippen's average stats were pretty comparable to Dwayne Wade when they played with MJ/LJ during their time together.
Interesting facts:
During the 90's Bulls runs, did you know that the Bulls only had one season where more than 3 players averaged double digits? Here's the list of championship seasons playoff averages for Bulls, Heat, and Cavs for top 4 players on each playoffs.
Bulls
1990-91:
Jordan: 31.1
Pippen: 21.6
Horace Grant: 13.3
Bill Cartwright: 9.6
1991-92:
Jordan: 34.5
Pippen: 19.5
Horace Grant: 11.3
John Paxson: 7.9
1992-93:
Jordan: 35.1
Pippen: 20.1
BJ Armstrong: 11.4
Horace Grant: 10.7
1995-96:
Jordan: 30.7
Pippen: 16.9
Toni Kukoc: 10.8
Ron Harper: 8.8
1996-97:
Jordan: 31.1
Pippen: 19.2
Toni Kukoc: 7.9
Ron Harper: 7.5
1997-98:
Jordan: 32.4
Pippen: 16.8
Toni Kukoc: 13.1
Ron Harper: 6.7
Heat
2011-12:
Lebron: 30.3
Wade: 22.8
Bosh: 14.0
Chalmers: 11.3
2012-13:
Lebron: 25.9
Wade: 15.9
Bosh: 12.1
Ray Allen: 10.2
Cavs
2015-16:
Lebron: 26.3
Kyrie: 25.2
Kevin Love: 14.7
JR Smith: 11.5
More support below, here are the top scorers that averaged over 10 ppm from MJ's playoff career, as well as Lebron's stints with the Cavs and Heat. Do the research for yourself, easy enough to look at the data via:
https://www.basketball-reference.com/teams/
Has every team by year, and can look at data by season or career.
Bottom line, if you want to argue coaching or intangibles, sure. But if you look at the numbers, the facts do not support that "Lebron didn't have help" and that he did it all by himself and carried the team.
Jordan's mystique has made folks revise history a bit and remember his band of merry men into something they weren't. Nothing against Luc Longley and Bill Cartwright, but it was the way the teams played more than the players themselves. Bulls did more with less than the teams Lebron was on.