I was looking over the chase rules in the SRD, and I came across the following suggestion:
Assign each obstacle a DC to successfully navigate or overcome. A trivial obstacle is DC 10, a simple obstacle is DC 15, a standard obstacle is DC 20, a difficult obstacle is DC 25, and a very difficult obstacle is DC 30. For high-level chases, feel free to assign correspondingly high-level DCs. When assigning obstacles, it's best to have the DCs of both obstacles on a card be within 5 points of each other, but never identical—this forces participants to make tactical choices.
Which makes sense to me, but then I noticed that in the sample chase, it seems that not one of the five contested rolls had DCs within 5 points of each other.
So I was wondering, am I reading this incorrectly? If not, and the suggested rule and the sample chase really do contradict one another, which method is the one that Paizo actually thinks is better?