I don't understand why his power is zapped in AAA. Going back to each level with a significant sample.
2011 - R - .146 ISO (184 PA)
2012 - didnt play really
2013 - A - .133 ISO (500+ PA)
2014 - A+ - .152 ISO (317 PA)
2014 - AA - .179 ISO (127 PA)
2015 - AA - .194 ISO (148 PA)
2014/15/16 - MLB - .163 ISO (148 PA)
He's been steady with .130-.170 ISO across his entire baseball career over ~1300 PA. Then you get to AAA, and his ISO is .080 spanning ~700 PA. I think his steamer projection of .260/.326/.379 (.119 ISO) is a reasonable projection.