No, she won't. Mary was a very good player and hall of famer, but literally all stats are in Halep's favour. (no of titles, career high etc.)
Pierce's career is questionable. She's one overrated player. I remember her very well, watched her playing even at the 2000 French Open and I was not impressed at all. I even remember the Arantxa Sanchez Vicario-Conchita Martinez SF. Arantxa was very bad and old. Conchita was playing simply just a regular tennis of today, nothing more. I even remember her matches against Sugiyama and Black, she was struggling as fuck, not wondering at all that Pierce won that final.
2000 was one of the poorest edition of Roland Garros ever. With Davenport and Capriat losing in R1, and Seles close to retirement.
Which is PEAK Pierce?
1995 maybe? One tournaments? Or two tournaments? How many? Carees means one year of good form?
Pierce only won the Italian Open outside the Slams and that's all. Kind of Kerber today. I remember her being humiliated by Hingis and Davenport, not just by Graf. She was losing to Majoli and Spirlea and you tell all of us how good was she.
So which was peak Pierce after all? 1 month?
The 2 Belgians, Kim and Justine, were serving her straight sets by no reaching 3. I also remember that, but that was later (but also, hey, she was playing Slam finals then), also when Mauresmo started to be a dangerous player.
So how can be 1995, 2000 and 2005 versions of Pierce so different? The logic is just that she only had 1 month of PEAK form. Just admit it!