Yeah, I did a similar test to akuno, this was my findings:

0% MF (20 runs):

Uniques: 1
Sets: 3
Rares: 21

154% MF (Only got to 11 runs before quitting)

Uniques: 5
Sets: 6
Rares: 23

I quit at 11 cuz the results seemed obvious to me. I have yet to test this on pindle, however. Pindle will require a LOT of runs to tell. Would likely need to wait for a bot to tell for sure.