That doesn't make sense. What if the 1st seed wins the lottery, then you are jumped by three other teams?With the 2nd worst record you cannot get the 5th pick, you can get top-4 or 6th.
The two (range of) outcomes with the 2nd-worst record is either top 4 (14%+14%+14%+10%) at 52% or 6th at 48%.