I think BGECOACH has the winning point. It isn't a question of who is the better athlete. The question is how many players can handle the duties at a particular position.
There aren't as many kids that can go both to their left and right to field a ball as well as having a good arm. Thus, it is harder to find an adequate player.
You'll find as the age of the girls increases, the outfielders become increasingly important. Finding someone who can really play CF is a major difficulty. A great SS basically cuts down on singles. But, a great CF decreases the extra base hits that a team gets. Fast outfielders who can really play the position allow the coach to position the outfielders closer to the infield, thus cutting down on the number of bloop singles.
But, this is really a theoretical discussion. On elite teams, every position is equally important, including pitcher and catcher. (Newbie coaches want a great pitcher, but the fact is that all elite teams have great pitchers. So, to play with the elite teams, you have to have great players at every position.)
There aren't as many kids that can go both to their left and right to field a ball as well as having a good arm. Thus, it is harder to find an adequate player.
You'll find as the age of the girls increases, the outfielders become increasingly important. Finding someone who can really play CF is a major difficulty. A great SS basically cuts down on singles. But, a great CF decreases the extra base hits that a team gets. Fast outfielders who can really play the position allow the coach to position the outfielders closer to the infield, thus cutting down on the number of bloop singles.
But, this is really a theoretical discussion. On elite teams, every position is equally important, including pitcher and catcher. (Newbie coaches want a great pitcher, but the fact is that all elite teams have great pitchers. So, to play with the elite teams, you have to have great players at every position.)