bbb asked Fran Crimi about this - here’s her reply from the Ask The Instructor forum.
“Yes. I've played both and watched many of their matches.They're both fantastic players but I would give Jean the edge for a few reasons. First was Jean's desire to win. She fought and fought and fought until the last ball was pocketed. It didn't matter if she had a big lead or was behind. She played with the same ferocity. She never let an opponent's mistake go by unpunished. As far as Jean was concerned, she either won the tournament or lost the tournament. Any finishing place but first was meaningless to her.
As for her playing style, she was more of a feel or rhythm player than a mechanical player. Once she fell into her rhythm, all you could do was sit and watch. I think her natural style of play helped her in adapting to changing playing conditions, so if suddenly the humidity kicked in in the middle of a tournament, Jean adapted pretty quickly.
However, having said all that about Jean, either one of those two great players could beat the other on any given day. I bet their win/loss record against each other would have been close. But I would give Jean the overall win.”