“On his English-language debut, Latin superstar Prince Royce aims to prove himself the crossover heir to Ricky Martin and Enrique Iglesias. The Bronx-born singer, 26, pulls out all the stops, enlisting an army of producers and guests like Snoop Dogg, Pitbull and Jennifer Lopez. But Double Vision lacks focus, failing to establish a clear identity for Royce: He morphs from a version of Jason Derulo (”