It's like Bulls fans were even more ****** at LeBron for daring take his talents to South Beach than Cavs fans were - and there was legitimate hate initially. A few years later Cavs fans finally got why LeBron did it - when the team literally fell to pieces when LeBron left, they began to realize it was LeBron and nobody else, and it felt like ownership wasn't doing what was necessary to get help.
Bulls fans, on the other hand, appear to still be self-entitled over the 1990s. How dare LeBron not come play for the greatest organization ever to play in the NBA and not live in Jordan's shadow into perpetuity? That's why Bulls fans irrationally hate LeBron more than anyone else - because they think they're still living in the '90s and think the Bulls are God's gift to basketball and how dare anybody not want to be a part of that.
As a result, most Bulls fans think forget Jordan, LeBron couldn't touch Scottie's junk. How delusional. While Scottie is one of the greatest to play the game, he never would have been considered such if he wasn't playing opposite of Jordan. He would clearly be a perennial All Star, but not one of the all time greats. He has done nothing in the way of championships without Jordan. Meanwhile, LeBron has won two NBA championships as the main man in Miami and has been to something like 8 straight NBA Finals, basically slapping several Cavs teams on his back and dragging them there.