Aidens will always have an easier time passing as men (at least at first glance) honestly. Just be far or a little chubby, grow beard, let the male pattern baldness take over, dress in stereotypical men's clothes, and voila. Bonus points if they're not a midget, even if they're just around 5'5 - 5'6 it should be enough.
It's their attitude/way of thinking/etc that give them away most of the time. It would be disingenuous not to admit many of them can pass as men. It just makes sense because for a female to look like a male, things have to be "added" (beard, weight, muscles, etc. with the only thing needing to be removed/hidden being the breasts) while MTFs are hulking hons with giant shoulders and massive bones, and you can't just "remove" those things. Even the most invasive, dangerous, expensive surgeries available for these issues can only do so much and 99.99% of troons cannot afford them (or are still sane enough to realize there's a 80% chance they would die or become crippled).
Male troons... never seen one that passes. I feel like the closest one has ever gotten to looking like a real female is Hunter Schafer, but it's all genetic luck because he's skinny, dainty, and would look like an absolute fag twink if he wasn't trans.