In my opinion, I think it depends on your appearance as well. If your appearance and status is appealing to a certain group of people as a 5'6 guy, you'll probably get more respect. For example, if you was a boss at 5'6 you'll probably get more respect than a 5'7 guy who doesn't appeal to the appearance or status.
I dont know if im making sense or if you can understand what im trying to say but that's how I view the situation