Dunno about Bakker, but what kind of influence can Erikson claim about characterization? They're D&D cutouts, best depicted by their one line descriptions in his Dramatis Personae.
As the aim of these authors was to make a point about Martin's characterization and the impact it has had on the genre, they might have chosen a better example than Erikson to make their point.

And the example they used proved that? How is braid tugging even related to characterization? That's like saying a beautiful smile is "characterization".
And Nynaeve is not wafer thin. Are many of the tertiary characters, especially the Aes Sedai, thinly veiled variations of a prototype? Yes. Is that the attribute of the major characters and hence the series, not at all.

But they are not! Martin's pseudo-feudal society is far more common that RJ's regressing Renaissance era world. Not to mention the female dominated world and the far ranging consequences this has on Jordan's world. Hardly typical.

And I don't understand why self styled literary critics will insist that novels that are primarily entertaining cannot contains deeper themes and elements that deserve praise. No one is claiming Jordan is the second coming of Doestoevsky!