So, in a future update, targeted for May, there will be an update to the EQUI_ItemDisplay.xml file to include the Item Comparison option drop-down list. Be sure you do NOT have this file in your interface. I will be removing this file from all interfaces so you do not have a future problem.
I already went ahead and removed this file from the following, no version update needed:
- INTG Steel
- EMU Warcraft