I would still disagree with you. The difference between an A player and a C player is many things, however, I would suggest that the A players ability to control the cue ball over the C players is a bigger gap than their ability to pocket balls over the C player, and by a lot. I'm not saying pocketing balls isn't important, in fact its essential, however I am saying that the difference to getting to the next level usually involves CB control more than ball pocketing once you are a C player. Certainly, at a B level and above, where all players have solid CB control, if one can pocket balls better than the other, they may win, but they never would have gotten to the C level without controlling whitey in the first place.
i just saw a video lesson linked in another thread where a study was done where pro players were told what pattern and shot to play by a lower level player. The pro players with all their ball pocketing abilities had difficulty getting out when they had to play the patterns and shots chosen by an amateur. That shuold speak for itself regarding the importance of CB control and pattern play.
Also, initial ball pocketing ability is one thing, but ball pocketing when using spin is another, that may be a mesh of the two, but falls more into the ball control arena than just ball pocketing.
Do you mind sharing that link? I would like to see it as it relates to a similar experiment involving chess players in a book I just read.