Actually getting the two, scaling to the same size, and overlaying them, it is blatently NOT tracing.
About those two links with the fading images... copy the image, take the individual frame/layer, remove the "fades" and the images don't match up.
Same for each example in the collage cover. Super similar, but the lines don't match up.
Lines don't match = not tracing.
responsible reporting = facts.
try it.