The difference is that the 2nd & 3rd place finishers in the 2015 Derby came back & ran in the Preakness. Firing Line had finished within a length of American Pharoah & Dortmund was 3 lengths back. In this year's Preakness, only 2 other Derby horses are back: Sandman who Journalism beat by 10 in the Derby & American Promise who was 37 lengths behind Journalism. Outside of Sandman & his groupies, I can't see any of the other horses taking serious money. The only thing I can see that would bump up Journalism's odds would be if the track is totally speed favoring & nothing is coming from behind, since Journalism is going to be around 5th or 6th in the early going.