The short answer is that PvP stats(resil and power) are going to be free stats. That means that the equivalent PvP item is going to be lower iLvl than a PvE item since the PvP stats will not be counted in the iLvl budget. So the entry lvl crafted PvP blue at level 90 is going to be a lower iLvl than the entry level crafted PvE blue.