Lebron's on/off differential per 100 possessions is +1.0, so the team is in fact better when he is on the floor then when he sits. They are 3-10 since Davis went down again. They've only played 22 games together and are 12-10 in those games, which is obviously only ok, but certainly isn't terrible. They are 5-10 in games Davis plays without Lebron and 12-19 with Lebron and no Davis. They've had very little consistency among those 2 guys and they absolutely need both of them to have any shot at playing well. And Lebron is in year 19 at age 37 playing for a bad team. Probably the worst roster in the sport outside of Lebron and Davis (who haven't played much together).