The ESPN CLUB is the restaurant that is in WDW -- the ESPN ZONE has locations in Anaheim, Atlanta, Baltimore, Chicago, LA, New York, Washington and (I think) Denver, but not WDW.
There is a distinction -- I had a gift certificate to ESPN Zone and, not realizing there was a difference, thought I could use it at ESPN Club on the Boardwalk. I was not able to use it there, but used it later on a trip to New York City. On the top floor in the NY City restaurant they have a huge arcade with many virtual reality games and arcade-style games.