What can #1 pick mean

Despite having just a 1.7 percent chance of landing the top pick, the Chicago Bulls moved up from the No. 9 spot to win the NBA Draft Lottery on Tuesday night. Here are the biggest turnarounds by teams that selected first.
Michael Beasley or Derrick Rose?
Year
Team
No. 1 Pick
Improvement
1997
Spurs
Tim Duncan
+36
1992
Magic
Shaquille O'Neal
+20
2006
Raptors
Andrea Bargnani
+20
2003
Cavaliers
LeBron James
+18
2001
Wizards
Kwame Brown
+18
2004
Magic
Dwight Howard
+15
2002
Rockets
Yao Ming
+15