Stasburg, Harper, Trout, Stanton, and Heyward(among others) all passed through the AFL all in positions, in the prospect rankings, as Buxton is now. I could see the justification behind not sending him but to say that prospects with nothing to prove(I would argue all prospects have something to prove) don't go there is demonstrably false. It's a great place to send him because so much talent goes down there, most the pitchers Buxton sees at Fort Myers won't make the majors, a significantly higher proportion in the AFL will.