It's designed to ruin your min-maxing experience. They rotate the stats on the same armor slot between tiers of gear. Now you cannot just use your 5 WH gloves to get the 5 EWH gloves. This way they will keep you busy for more time.
Thank you very much for the prompt reply and for confirming what I suspected. So I prepared in advanced for nothing so to say. Oh well, not the first time BW gives us the shaft and it will not be the last.