Yes but if look at.... Actually never mind, I can't get into one more argument about this for the rest of my life.
I can understand the exhaustion. But my own thoughts are:
1) Stronger women gain strength faster.
2) The Aes Sedai sample we have skews towards the stronger ranks.
Both these would explain why it seems like stronger women train faster.
That is true, but I've always found that stronger channelers don't struggle with anything. The WT is very controlled and variable inside, so it's difficult to say what goes on there. However, Elayne was a fully functional channeler by the end of TSR, and could split her flows many ways. She was also as strong in the Power as Liandrin, the strongest of those BA, and yet her training was minimal. I do still think that strength gives you an affinity with saidar/saidin - I would even call it kinship - that allows you to weave it easier and progress faster. Egwene is the same and there many examples, though I don't like to use her as an example because I think she has rare innate skill and strength with saidar and the five flows. Alivia and Nynaeve can both reproduce weaves after seeing them once.
I'm not saying that weaker channelers can't be skilled. I'm saying they have to work and practice harder. Channeling is probably like intelligence. If you're clever you pick up things easily, but less clever people need to work harder and they eventually come right.
Fan of Lanfear