I understand why Kobe gets that rep, I respect his game, but I don't know why MJ is known as a "killer" when LeBron isn't. MJ has 0 career ejections, 52 career techs, and 2 career flagrants. Meanwhile, LeBron as 2 career ejections, 90 career techs, and 8 career flagrants. He had a career high of 10 techs in one season, whereas MJ at his best only had 5. LeBron is much more dangerous on the court than MJ ever was, and is more likely to bite when provoked. MJ just barked, and had to recruit guys like Rodman to do his biting for him. LeBron did his own biting when pushed far enough, which is rare since he's a scarier dog anyways.
https://www.espn.com/nba/player/stats/_/id/1035/type/nba/seasontype/2
https://www.espn.com/nba/player/stats/_/id/1966/type/nba/seasontype/2
Kobe was a true killer though. Bro was out for blood every night. He has 7 career ejections, 196 techs, and 9 flagrants.
There are many reasons why Jordan was a"killer", but I think what's usually ment, that U better don't piss him off.
If Dillon would have a loose mouth when he would have played MJ, MJ probably would have dunked 10 times in a row on him and make sure he doesn't get a shot up.
Several examples during his career, if you Google a bit.
That lead to opponents players even tried to avoid eye contact, just to make sure they are not a target for him.