I'm late but here goes. I sometimes enjoy looking attractive even if I'm alone, and I can see how someone might think that's roughly analogous to AGP or how it might turn up looking like AGP in a study that doesn't differentiate well, but it seems qualitatively different to me from the way I've heard AGP described. Most importantly, it's not physically arousing. It's a psychological boost to feel attractive, and I might enjoy how I look aesthetically in a similar to way to how I find a beautiful woman pleasing to look at as a straight woman, but it's not physically arousing like the self-reports of trans women who become aroused when wearing feminine clothes.

Aside from all that, it makes sense that a woman would conceptualize herself as a woman who is being desired in ways that women are typically desired. That is entirely different from someone becoming aroused at putting on a skirt or being recognized as a woman, and I'd be shocked if you found a female human anywhere who experiences that. Being recognized as female and wearing standard women's clothing are day-to-day aspects of life for most women, and most men do not typically sexualize women specifically based on those characteristics, so males becoming aroused at things happening to them that are so mundane to women and not typically considered sexual sounds like its own category to me.