Its agenda because yes while these are launch aligned comparisons, it doesnt change the fact that vita has sold more than pspover an UNADJUSTED period. The other graphs are actaully more factually accurate as they have not undergone a single manupulation.
yes manipulations are fine in graphs, but it is taken together with the fact that each manipulation tells a different story.
there are no right and wrong graphs because different sides of the same dice is still the same die, just different meanings.