directly that she can draw more Power than Naeff.

1. She has absolutely no idea how much of the Power Naeff was drawing at the time to create his wind. She simply knows they are both doing about an equal amount of the work. The author is telling us directly with that statement that Nynaeve is stronger than this man, something I don't think RJ would have ever done so directly.

2. Nynaeve has been shown time and again to have great strength in Air and Water, corner stones to both Healing and Listening to the Wind. So it's an even more odd comparison, Naeff must be very strong in Air indeed!

3. Nynaeve has also seen a distinct increase in skill level (as has Egwene for that matter) in the last couple of books. I attribute that to Cadsuane who encouraged Nynaeve to learn the 100 Weaves. Nynaeve has been rather lazy in anything outside of Healing for most of the series, but now she suddenly seems to be showing more work ethic.

4. Additional Strength likely can increase basic effects ... look what Nynaeve did in her testing with some of the 100 Weaves! She increased the amount of Power and used at least one of them as a weapon. I'm certain that Nynaeve could create as big an earthquake as Egwene, I doubt however, that Nynaeve could match Egwene's ability to make Cuendillar or sense metals or any of the other "affinity" related skills that come with being strong in Earth.

5. As with most things I tend to think about this whole thread in the reverse to you ... rather than thinking being strong is the important thing here I immediately saw this as a weaker channeler's skill allowed them to equal the stronger channelers affect. Which goes right back to the thought that someone like Egwene could potentially match up to a Forsaken level individual if the skill differential was enough. Egwene herself seems to believe she could have faced Mesaana and defeated her.