Gaurdmaster your not RUDY, dude stop trying to brain F*&@K yourself....its depressing me

I don't know how long you have studied BJJ but here are the questions (there is no right or wrong answer)
Do you want to study BJJ
Do you feel it is right for you
The average person can study and learn any MA, but that does not mean it is right for them. People in wheelchairs or other handicaps get BB in MA you can handle BJJ. But remember, grappling/ground fighting is not for everyone. Just think would Bruce Lee have been the same icon if he study Karate only (or never studied wing chun) good yes great maybe legendary doubtful...wingchun was the style for him.
I do understand you point about Royler, he started advanced being a Gracie but height is height. Yeah you may not reach his accomplishments in the ring (and you may not want to) but the mechanics are the same, you know it can be done...that's all you need to know.
Height is not the issue, like Sean said women that are 5'0-5'5' are practicing BJJ and judo....but maybe you need a deeper understanding of the techiques. You learn all the techniques you can and then apply to your strengths by understanding your weakness. I don't study BJJ so I can't give technical advice, but I definatley would discuss this with your instructor since you are struggling with this issue
There are advantages and disadvantages to everything you know some of the disadvantages now focuses on the advatages lower center of gravity.... do you have good balance do you frustrate people when they try to take you down.
Anyway, I am not attacking just my thoughts