CB boost:

(55 * 1.5) + (50 * .5)
82.5 + 25
107.5

Now the Hustle boost:

(107.5 * 1.5) + (50 * .5)
161.25 + 25
186.25 ~ 186

So Delibird really does have over 180 effective Base Atk with a Choice Band and Hustle. And just wondering, did you actually double check his calc on Dragonite, or did you just assume that it was wrong?