he is talking about end game gear... (starting with your lvl 45 AF gear and than darklight and so on...) they have ONLY mind and no int... while the equip u use right now have both mind and int... that's why u see them on the same lvl... once u get to those gear u will have 100+ point of difference only from gear between the 2 stat... than add the stat bonus from sch that scales with lvl (with mind primary and int lower) and u will find that the switch is no more any good...
