I have to say I'm honestly scoobied by the people on here saying transmen pass better than transwomen. They really, really don't. The sheer size of the skeleton and smoothness of the skin is such a huge giveaway. Very young transwomen pass better as women than transmen of any age no matter how jacked they are.
I cna only assume that the posters saying transmen pass well have mainly seen transmen online, where camera angles can indeed make passing better. But once you start tlaking to a transman, there's no way you would mistake.
There's an uncanny valley effect in my experience, men have quite rough and thick skin. You honestly don't notice or think about it until you talk to and hang out with a transman and then you suddenly realise that ouf skin is different to man's skin and it plays a huge role in the difference in appearance.
Same with the hips - men walk so differently, their legs move so differently and you don't really notice that difference until you walk somewhere with someone who's trying to look like a man but isn't one.