Speaking for my experiences.
I have nothing against males, I like males, I have mostly male friends, I just don't want to be one and don't feel like I am one. I have always felt like I'm supposed to be female. But not because my personality might have been feminine, not because I thought the girls were doing something more interesting than the boys were, simply because it 'felt' like I was supposed to be. I can't explain what that's like, I can't even attribute motive too it, it just is. A motivation to be female seemingly driven only by itself.
I never wanted to be a male, but in addition to that I also WANTED to be a female. I can't even try to attribute reason as too why, it's just the way I felt, inappropriateness with being seen as male and appropriateness with being seen as female.
So, in the end it really doesn't matter if males have it better, or easier, or what range of behavior is and isn't found acceptable by them.
All the acceptance of my behavior seen as a 'male' in the world wouldn't have changed my need to transition. I would have eventually killed myself otherwise.
So what does it mean to feel like you just ARE male? I couldn't say, no real experience with it.
What does it mean to feel like you just ARE female? I couldn't say, but I know what it's like.