No it's not..how many times do we have to say this? It's a TOTALLY different model.
Here are only a few totally obvious differences that require a different model:
Collar is totally different. CT one is asymmetric while the battlemage one is symmetric and has a totally different opening down the chest.
The chest has those little bottles which are part of the model. They are completely missing from the CT one.
The skirt has not only a different bottom it also has that edge to the side which, again, asks for a totally different model.
The healer and dps caster CT sets are the same though, just different colors.
Direct comparison:
http://i.imgur.com/WLgOs3Q.png
And a few more screens of the new armor:
http://i.imgur.com/iC1h5lT.png
http://i.imgur.com/wQxwiKh.png
http://i.imgur.com/XgbvCi8.png
http://i.imgur.com/hDcpVl7.png
http://i.imgur.com/UyNUqyF.png
