American Express card easier to get if I had an account with my mom?

My mom has an Amex card and I've had my own card under her account/name for about a year. I'm 20, and have never missed a payment on any card. My question is, would it be easier to get approved for one of their cards since I had one in my own name, even if it was under my mom's account? Or is my probability of getting approved for my own card separate from my mother's the same as me never having a card with them? Thanks in advance to anyone who can help