You're right, 12 slam finals what a lucky talentless hack Arantxa was. It's not like she had to contend with one of the best players ever, and that 1989 Roland Garros title? What a joke that was!Of course Aranxta faced Graf. She didnt face much of Seles, her ultimate nightmare matchup more than Graf, who was stabbed and away most of Sanchez's glory years. So saying she faced "Graf and Seles" to win all her slams is not at all accurate. Same goes for Conchita and her success.
Sanchez, Martinez, and Novotnva have never won a major title with Seles at peak form so your point already loses all value. However to answer your question, if Hingis peaked at the same time Sanchez and Martinez did she would have done way better than both, I can guarantee you that much. Sanchez won 2 slams in 1994 with Graf fighting injuries and loss of form and Seles gone altogether, if prime Hingis were around that would have never happened, heck it is doubtful Sanchez could even win one slam if she had to play Hingis who is probably an even worse matchup for her than Seles. With Sanchez and Martinez winning 3 of the 4 slams that year, it probably would have been a 97 esque year for Hingis, and with her bitch (in Hingis's prime years) Mary Pierce winning the Australian to start 95 maybe the Hingis slam. Hingis would have shone brightly in the mid 90s which were really weak, Graf would have been her only real competition in fact. Hingis did peak at the same time as Novotna, both peaked in the late 90s, and did far better than her as well.
Sabatini is the only one who was unlucky to have tougher competition in the early 90s but 18 slam semis and only 1 slam title is still the ultimate fail. It is too bad too, she certainly had a better game than Sanchez atleast, but not the same mentality.
It is annoying to have to defend Hingis so heavily when I dont even like her, but Hingis was in a whole other league then all the players you named. Hingis is closer to being #2 in the 90s then she is to being any lower than #3.
Sanchez Vicario was the biggest beneficiary of the Seles stabbing, contrary to Selestials belief even more than Graf as Graf was fully capable of beating Seles most anywhere, and a lock to beat her at Wimbledon. To hear someone knocking Hingis's superior achievements, dominance, and career due to weak competition in favor of the Seles stabbing vultures Sanchez and Martinez, and an even bigger opportunist of the late 90s transition period than Hingis who unlike Hingis immediately plunged downwards and retired once the brief transition period was ending- Jana Novotna, is rich with both irony and silliness. Sanchez is really one of the luckiest players ever, peaking while Seles was out, before Hingis emerged, with the whole womens field that had peaked in the late 80s and early 90s falling apart, and being a naturally bad matchup for Graf which allowed her to shine and look more competitive in that matchup then she would typically look vs even a much less great player, and that Graf was also injury prone around the field was so thin that there was literally nobody else in her way for awhile if something happened to Graf or she somehow could get past her.
Lastly why couldnt any of Sanchez, Martinez, or Jana capatilize on this period you think Hingis was so lucky in. All were in their mid 20s, except Jana who was still hitting her career peak at that point. I will give Sabatini a pass as she had mentally lost the plot and been in steep decline years before that point. Since you asked me a question you have to now answer this one. Also while you are at it explain Sanchez's head to head with Hingis, and why even in 1996 15 year old Hingis had a winning record over prime Sanchez.
I just noticed you ranked Seles over Graf. That is another terrible judgement, and almost as bad as ranking Hingis below Sanchez (but still not nearly as bad as ranking her below the 1 slammers core to boot).
I would take your argument and listen to it if you weren't so obnoxious about it. Not all your points are terrible, but calling Arantxa and Conchita "stabbing vultures" as if the stabbing was their fault, or blaming them for winning titles while Monica was absent...Gee, maybe they should have stopped playing and said, "Monica would have won all these titles, let's jsut give her credit for them".