Yes, we have to go through the cognitive dissonance of a counter-example to the long-held maxim:

All Shimano indexing rear derailleurs have the same cable pull, except Dyna-sys and old Dura-Ace.

Just as politicians are reluctant to reverse their stand on, well, anything, in the face of overwhelming evidence to the contrary, we internet mechanics like to find root cause when our universes are being upset...