Give the kid a break dudes! Aslong as he continues with his interest in MMA he should be a beast when he's 18. Its scary and pretty f*cking exciting to see kids like this training MMA at such a young age. Good luck kid. Hope he continues with the hard work.
That's exactly the point. He could continue working his tail off until he's 18 and still not amount to much. We don't know what his frame will be like, how athletic he will be, or whether his skills will have plateaued by then. And that's not even taking possible injuries into consideration.
It's simply too early to tell, too many variables.
This applies to child prodigies in just about any sport, btw.