I'd say that is a fairly decent prediction. It could be better if Lillard has a Chris Paul type rookie year. It could be worse if he has a Sebastian Telfair rookie year.
Certainly things can change in a hurry for NBA teams when they lose their best players, but Vegas certainly is the best at projecting how good teams are. If this list was from a fan or from the media, there would be plenty of "raised eyebrows" regarding the order. But this list seems pretty dead on. At least for now.
Taking under is basically saying we will be worse than last season (.424 PCT), Vegas has us winning at .433 PCT this year, slightly better. Sounds about right, last year was horrible.
If I had an extra grand laying around there are about 10 of those that I really like and would have no ill feelings of laying 100 down on.