EAN is a part of the GTIN code (http://en.wikipedia.org/wiki/GTIN).

The GTIN-code GS1-128 http://en.wikipedia.org/wiki/GS1-128 can contain 128 digits.

In the template source/application/views/azure/tpl/rdfa/details/inc/object.tpl we implement gr:hasEAN_UCC-13 instead of gr:hasGTIN-14,
because a property value like gr:hasGTIN-128 does not exist.
property="gr:hasGTIN-14"  is the only possibilty that exist yet.
But, we want to introduce GS1-128.
Please have a look at http://en.wikipedia.org/wiki/GS1-128 .