Yeah, I disagree. The Companion says explicitly that someone very strong can be very unskilled, and I believe that to be true. Skill is distributed all over the strength scale. We know Sorilea, weak as she is, is very skilled.We've seen it with others too. So no, I don't believe its true that skill goes with strength.
But I'm talking about trends, I'm not making a rule. Aginor is an excellent example of a very powerful and unskilled channeler. A strong channeler obviously has to train and practice, but as I said, I believe they are better with the Power innately. Stronger channelers also have more Talents in general. There is a general kinship with saidin/saidar that increases with strength, especially at high levels. I've never seen a strong channeler struggle with a specific flow.
There are irritating people who can study two hours before an exam and get an A and others who can't. The Power could be like this.
Since when is Sorilea skilled?
Fan of Lanfear