Here's some other stats on the history of the Lottery since it was implemented in 1990. The number of times teams have won the lottery (picking 1-3) based on their record:
http://www.draftexpress.com/nba-draft-lottery-history/
(Plus adding in 2010 and 2011)
Based on record starting with worst: (No. times won lottery to pick in top 3)
Worst: 15
2nd: 9
3rd: 9
4th: 8
5th: 11
6th: 6
7th: 2
8th: 2
9th: 1
10th: 1
11th: 1
12th: 0
13th: 1
The fifth-worst team has actually won more than the fourth-worst, and even second and third worst. Interesting to see if anything.. like playing roulette.