You forgot to mention your cures and the damage from Spirit's Within. Together with Flash, Provoke and Rampart, none of these skills are significantly affected by STR/MND/ATK as far as I know. I thought I remembered reading about MND affecting the combo bonus of either Flat Blade or Spirit's Within, but I can't find anything now.
As Tango has pointed out, the combo bonus on Flat Blade makes a strong case for STR over enmity in slots where they compete.Originally Posted by Tango
I see parse results for damage done to Garuda, but I don't see parse results for # of times flashed/provoked/ramparted and amount cured. And I don't see a breakdown for how much of the damage is coming from Flat Blade and Spirit's Within in combo. All of these factor into an analysis of enmity vs STR/MND/Atk.
As for ACC, yes, of course you want near cap accuracy so you can generate TP and land combos. It's after you get your ACC up that you debate other tanking stats.