Well as it happend I found a pair of Inna's Temperance that I have on my monk that has the exact same stats as a guy in the EU server. So it is possible... but not probable.
VERY similar, but still not exactly the same. the +armor attributes are different.
anyone who doubts duping should go and look for identical items between the different realms and see how unlikely it actually is in practice then even if you find a handful after looking through 1000s of items compare that handful to the 100s of dupes on same realm rmt has blizzard by the balls
i suggest everyone sell their gear on the ah in internet cafes then petition blizzard they were hacked maybe that would stem some action
hopefully whoever the new game director for d3 will have some ideas to bring back some integrity to diablo at least get rid of blizzard sanctioned pay to win and start deleting these dupes