ORLANDO, Fla. — New details from Universal Orlando about its upcoming Epic Universe theme park are the latest flex in the long-running competition for tourism dollars by entertainment titans, including standing champion Walt Disney World, which industry analysts predict could soon strike back. Universal’s Epic announcements confirm big news such as the park’s lands being themed to Nintendo, “How to Train Your Dragon,” Harry Potter and Universal’s classic monsters. And they unveil finer details such as restaurant names and the speed of the racing roller coaster. The batch of facts intensified t…