Another good way to look at MJ is this: the 1992 Dream Team is the greatest basketball all-star squad ever assembled, hands down, but is also a lineup of his victims.
Ewing (‘89 EC semis, ‘92 EC semis, ‘93 ECF, ‘96 EC semis)
Drexler (‘92 NBA finals)
Stockton (‘97 NBA finals)
Malone (‘97 NBA finals)
Mullin (‘98 ECF)
Barkley (‘93 NBA finals)
Magic (‘91 NBA finals)
Of the rest, Pippen was a teammate, Robinson didn’t make the finals until after MJ retired the second time, and Laettner was a token college player (though The Bulls beat his Hawks in the ‘97 EC semis).
Only Bird was undefeated against MJ in the playoffs, but that was during MJ’s first two years, and Bird’s career wasn’t long enough for meaningful competition during MJs title runs.
Dream Team pariah Isiah Thomas was 2-1 against Jordan in the playoffs, but Jordan ended the Pistons three-peat attempt in the ‘91 ECF. And speaking of hand-checking etc., there hasn’t been an equivalent of the Pistons’ “Jordan Rules” for LeBron.
MJ also beat post-Dream Team greats such as Shaq/Penny in ‘96 ECF and the Payton/Kemp Sonics in the ‘96 NBA finals. And he also scored the winning shot in the NBA championship game, of course.
If you HAVE to choose, by contrast, I just don’t think LeBron has overcome his competition in the same way. He joined Wade in Miami, he didn’t beat him. He did beat the Spurs and Warriors in the finals, but he’s also lost to them, too (badly, in five games each and another sweep to the Spurs during his first Cleveland stint). He’s also lost to Dirk in the finals.
Even if you do rank LeBron #1, that aspect of Jordan’s career is unbelievably impressive.