How easy or hard your coming out experience is does not depend on one single variable. Or on two, or on three, but on many.
In my personal experience, I do not know whether being masculine made my process harder or easier. What I do know is that I immensely enjoyed that moment of confusion and incredulity most times I came out to different people. In a few occasions I even had a very hard time convincing them I was not joking, as I am known for not being serious quite often.
I never thought about it, right now my first reaction is to think that being masculine made it easier for me, because that confusion was a symptom of their stereotypes crumbling down, and their brains and hearts getting ready to unlearn bull shit. But I do not know.