http://espn.go.com/nba/playoffs/predictions Bulls win the championship just once. I tried about 20 times each predictor. Check out this screen shot.
Don't take so many runs...only 10 with the current standings. Bulls win the championship twice. Celtics and Heat also twice and Spurs, Thunder, Mavericks and Magic once. So the Bulls run end at Conference Finals 3 times, Conference Semis 4 times and in 1st Round one time.
The underlying probabilities Bulls 53%, Celtics 47% (Bulls with home advantage) / Bulls 44%, Celtics 56% (Celtics with home court) Bulls 53%, Heat 47% Bulls 58, Magic 42% Bulls 89, Hawks 11 Bulls 45, Spurs 55 Bulls 52, Lakers 48