I used this calculator to get the steps for Pluto Relinquish. When I plugged in all Perfects, I got this: 994,834! How is that possible for a PFC? I thought they had to be at least 999,000.
if it's all perfects then it's still technically a Perfect full combo. I would be REALLY impressed to see people get a PFC without any marvelous's though like that

Work in Progress
Yeah, if there are no Marvelouses, it would give you that. If you get all Marvelous and Perfects, the score is 1,000,000 minus (number of perfects x 10).