I think Len needs to post his people at the entrance gates and count how many people enter the parks. That's the only really accurate way to determine crowd levels. Basing crowd levels on wait times seems problematic because when several rides are down at the same time, waits will be longer without there actually being more people in the park. Maybe Touring Plans needs to call it "Wait time Index" instead of "Crowd Level Index." Maybe there were lower numbers of people exiting rides because there were actually less people in the park that day? Just because a ride CAN put 1500 people through per hour doesn't mean it always WILL. Maybe I misunderstand the science behind this, but the easiest explanation for lowered capacity is simply less people riding per hour. Without having actual guest attendance numbers for every day you are collecting capacity data, the numbers don't mean anything.
Now, if Len had said "On Tuesday, there were 40,000 guests in the Magic Kingdom and we saw an average of "X" guests exit Attractions A, B, C, D, and E per hour using 8 hours of data. On Saturday of that same week, there were ALSO 40,000 guests in the Magic Kingdom and we saw an average of "X+25%" guests exit Attractions A, B, C, D, and E per hour using 8 hours of data." If THIS was the analysis, we'd have a valid reason for this whole discussion.
I'm not a data scientist, this is just my logical, common sense brain talking. I'm probably missing something really obvious, though, I admit that's possible.