Check out my MDP report that will now be right below this thread. Once you get to the later rounds (i.e, below 200), there starts to be little separation between ADP's because these sampled leagues tend to be very shallow (20-23 rounds). Players drafted in these rounds vary greatly because they are usually fliers or roster fillers.
Salty is actually a bad example because ESPN seems to be way off on his ADP:
Couch = 129.90
CBS = 157.69
ESPN = 214.70
Yahoo = 143.00