Champion Meta Chart
First off, they give you all of the numbers, they don't hide the fact that "X is better at Z," but it also stresses that "X is worse at Y." Giving the manager a more clear way to see what is champ is better at "Z" would help them plan better instead of looking for "what green is the brightest/biggest circle."
That's the second complaint I have with the chart. Though the size of the circle is a good idea, the color scheme is actually atrocious. Some of the colors bleed too much together and staring at it too long honestly gives a headache. If you had the colors more defined, it would probably help the chart overall instead of having players currently being like, "well, I guess this green is a little bit brighter than this one? Let's see how big it is compare to the mouse pointer." By having a more defined color scheme will actually have the size of the circles stand out a bit better and you wouldn't have to completely overhaul the whole thing yet. Also, I don't know if people with color blindness have issues with the current chart, so it would be nice to see if you can vet it through some of those folks to see if it works.
I do understand that the whole point of the way it is now is to show that two champions could be close to doing the same thing, but one is slightly better. However, as an overall structure of a chart, it's a mess. A chart should be an image where you can look for a couple seconds and capture an overall idea of the information, but when you delve more into it, you are able to have a more in-depth understanding.
Also, please have an option to either sort the columns or at least put the labeling of the chart as a float so that when you scroll, that part scrolls with you.