Fact is, Miley is like that Beaver kid. Both are modestly talented, but came into contact with the right folks, at the right time.
Go to most high school coffee houses/talent shows, and you'll see kids with just as much, and in many cases much more, talent. There were drummers, singers, guitar players (a few who have become quite "famous" in their own right) at my HS who make Miley and Beaver look like fools.