Your arbitrary scale making Nynaeve only an 85 is laughable to begin with, and assuming the strongest AS are maybe in the 30s when the Author himself speaks of a bell curve distribution is even more astounding. The quotes and scales work just as easily and map better to a Bell Curve if you have

Lanfear: 100
Cyndane/Aliva:98
Graendal/Sharina: 97
Nynaeve: 96
Semirhage: 95
Mesaana:94
Moghedien: 88
Egwene: 80
Bode: 75
Cadsuane:65
Moiraine: 45
Verin: 30
Daigian:15
Morgase: 1

Suddenly you you start seeing a mass of women in the range between Cadsuane and say Verin (the bulk of where a Bell Curve average would fall) then a tapering off at the weaker end of the BC as you get down toward Daigian and even more so as you head down to Morgase.

on RJs scale that would make Level 21 Semirhage and up, Moghedien and Mesaana at level 20, Egwene 19, Bode 18, Cadsuane 17, Moiraine would probably be the lower end of 15 and Verin 12 and Daigian the bottom part of level 9, probably Daigian is about 2x Sorilea who would be like a level 4 or 5.

RJ also claimed that there were "several levels" of male strength above the 21 female levels ... so Rand on this scale would be something like a 125 ... give women a 25% dexterity bonus to compensate for effectiveness and suddenly you have Nynaeve at the same effective level as someone such as Sammael and Graendal effectively the same as a Demandred.

Egwene would be about 80% as effectively strong as Rand in ultimate Potential, but only have about 60% of his raw strength.

When she met up with him in TSR she was probably around a 48 (slightly stronger than Moiraine) to his 110 in Raw terms (he was already in FS male range) ... Elayne was significantly weaker than Egwene when this event took place so she was likely no more than a 25 ... and they were not linked ... it's no wonder they felt like kittens being manhandled and it would explain why Egwene thinks Nynaeve could come close to the effects she was seeing from Rand ... at this point Nynaeve was a mid-80s level and with a dexterity bonus would have been close to Rand on an Effective level, Further, it explains why Lanfear was MORE effective than Rand when he dueled her a book later. He still had room to grown and she was at maximum effective strength, thus he was dueling someone stronger ... and losing, based on that and a huge gap in skill.

It also explains how Egwene can be as strong as Melaine and Amys combined yet still have a significant gap up to Nynaeve and why Reanne would have considered Alivia "considerably" stronger than Nynaeve in POD ... Nynaeve at 90% of her potential would feel significantly weaker than Alivia to a woman who's total strength is around a 40 ... the difference between Alivia and Nynave would be something like 25% of Reanne's total strength, where from Alivia's view point Nynaeve is only about 10% weaker than her and still has room to grow.

And it illustrates the authors comment that Egwene was a step down from the Forsaken ... on your scale she's like 5 steps down.