That's quite absurd and refuted by the text!
And who are then the six women stronger than Nynaeve, if Cyndane and Mesaana aren't stronger? Alivia, Graendal, Semirhage, some super damane from Tuon?

BTW, BS explicitly stated that he didn't mean that Asmo was balefired. He also said that there are other RAFO circumstances besides balefire, which prevent a transmigration. This fits with RJ's comment that the DO couldn't transmigrate Asmo because of how AND where he died (if Asmo was balefired the DO couldn't already transmigrate him for that sole reason!). IMO, a certain death in TAR is such a circumstance.

However, the theories that Sammael or Be'lal were transmigrated seem pretty much crushed. Since Osan'gar wasn't balefired, he might have been transmigrated, though, if the DO is such keen on bringing back his original Forsaken. Maybe hs is truly Moridin's messenger seen in the prologue of TGS.

And we know now that Rand's sword is indeed a RAFO.

Good report!