Element vs Ion for moving lights

We are renting a junior high school for a production of Joseph and the amazing technicolor Dreamcoat next week. They have an ETC Element, updated to 3.0.1 software. 

We are renting four Elation Picasso moving lights for the production and a couple of tech guys have told me that we really need the Ion XE for moving lights instead of the Element.

Is that accurate? Should we also rent an Ion XE or are we ok to program the Picasso lights in the element? 

Thank you! 

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