I don't see any statistics normalizing those percentages though. Maybe normalizing isn't the right word. What I mean is what is the percentage of browser user

I don't see any statistics normalizing those percentages though. Maybe normalizing isn't the right word. What I mean is what is the percentage of browser users clicking through weighted by browser share. Obviously if there are more IE/Windows users, there is going to be a higher percentage (in aggregate) than others. Browsers are not evenly distributed. Perhaps this is shown in the original data, but I see no indication of that in this article.