I have been face with a similar problem recently. What I did was select the shaft I felt the most confident with. My thinking was neither shaft selection was a bad selection so I the golfer should make the call.   I know and feel your pain.

Thomas:  how are the lofts configured?  It would be easy to make them stronger in the short irons.  Maybe add an extra gap wedge.

Hi Eric: There is an actual Titleist staffer bending and checking your irons!  They are not forged to spec.  You can bend irons very easily, but more than 4 degrees either way gets a little risky.  The chrome can crackle a little bit.