The best part about those rankings is Columbus, which he "ranks" two spots lower than the Blues but has this to say about them:
15. Columbus Blue Jackets The Blue Jackets will be a tough team to play every night because of Ken Hitchcock’s system and Steve Mason’s(notes) solid goaltending. Look for Columbus to finish third in the division and eighth in the West.
So...you rank them lower than the Blues...but they will finish third in the division, eighth in the West...while the Blues will possibly miss the playoffs if they don't finish 7th. Hmmm...so if the Blues do finish 7th...what does that mean for your prediction of Detroit, Chicago, and St. Louis making the playoffs, but Columbus finishing 3rd in the division and 8th in the playoffs?
It all makes perfect sense.