@p The chart is pretty bogus given the labels alone. Is there a definition of "sexually attractive"? Does it account for "nubility" by which I mean a girl appearing to be of fertile development maturity, regardless of her chronological age? There is a beauty and attractiveness in "youth" in general. Many of the things mature women do or at least the marketing suggests they do, clearly has the goal or appearing younger than they actually are. One might even consider the current trend in pubic hair styles, or even overall weightloss to be with the intent of looking "younger". Some of the "Asian" fetishes tend to focus on the more slight, less curvy sub-nubile or pre-pubescent appearance. Though the androgynous focus a while back, was focused not only towards a unisex but also for the more slight. The occasional bear in a dress with a full beard being an obvious exception.
It might be a better study to focus on the origins of pedophiles' templating or impressioning as it were. Are their still somewhat stuck in their 12 year old brain getting that same feeling from seeing a 12 year old girl? I assume that at 40 a man does't see a 12 year old girl with the same reaction he did when he was 12. I think it would be too simple to say it is just that. Like many situations with sex power is involved. Perhaps the power one feels over someone is directly proportional to the weakness they perceive in that person's appearance. These are just guesses, thinking aloud.
In theory, we should be reacting to natural cues to further the species. Nubility/fertility specifically the recognition of which, would be key to the survival of such a species. One may argue towards the precocious pubescence perhaps brought on by either hormones in our food supply or possibly by the easily available high caloric foods leading to childhood obesity and potentially increasing the rate at which girls may reach a body fat percentage that would increase estrogen earlier than one would have in years past. This in itself is taking things outside the idea of pedophile stimulus, as defined naturally of the interest in those below a nubile/fertile development, and into a legal realm of chronological age.
As to whether or not a man can suppress his arousal or not, one might argue that it may be more important that he can control his reaction to such arousal. Traci Lords was legally a minor when she made movies and posed for nudes in Penthouse magazine. Legally, all that work became "child pornography" only after it was revealed that she was underage when it was made. However, any man looking at her image would recognize her as an "adult woman" because that is what she looked like with all the cues of such. Contrast that with the nudes Brooke Shields had in Playboy when she was 10 which I doubt could be confused with an adult woman in any way.