Because LeBron really made a difference when the Heat played the Clippers. Because LeBron really would have made a huge difference tonight. You're implying the Bulls wouldn't be able to win if LeBron played, which seems to fly against Miami's W-L record this season. They have lost to teams worse than the Bulls this season. They haven't really lost to teams worse than the Bulls, or anyone else for that matter, with Lebron in the lineup. Edit: lately I mean