Those charts are all based on "Marvel Sketch".. If we were just to run with "Sketch" - the sell through numbers increase and so do the average prices.
Edit: While using the search function - Marvel makes up for roughly 30% of the sketch sales.
Currently looking for the following comic Books:
United Comics: 21,22,23,24,26
Tip Top: 173 & 184
Peanuts 1 (1953)
Peanuts: 1-4 (1963-64)