Interesting, thats not me btw just a pic i found online. The mismatch in size was worse for me. And Im the only one in my family that had that. Well my sister has it to a lesser degree. The thing is, that it got a little better when I got older, it is still bad in my senior year of high school but not AS bad. Also I saw some girl on facebook with even more of a mismatch, like her central incisors went below her lower lip. I felt bad for her.
The thing is, whatever the cause of it is, is probably the cause of my overall bite/skeletal issue as I started out with a bilateral posterior open bite. As in my central incisors met and my molars met and nothing else. That is important to me.