There was abound to be some change between the terminology used in the Japanese version of Yugioh Zexal compared to the American version. Here are some of the crucial changes:
Exceed Monsters are now Xyz monsters and overlay units (or exceed material monsters) are known as Xyz material monsters.
No.39 Aspiring Emperor Hope has become No.39 Utopia (I have no idea why).
No.17 Revise Dragon has become No.17 Leviath Dragon.