To put it differently, there is roughly a 27% chance that a team outside the bottom four will win a top-3 draft. But this could be any lottery team, ie any of the remaining ten teams.
If we really want to go after Okafor or similar calibre talent we have to tank so badly we finish in the bottom 4, but this, apart from being a disgrace, is very unlikely to happen. LAL, Minny and Utah play in the Western conference, so they have a way tougher schedule, and then there is Detroit, Charlotte, Orlando...