Simplify the following text for a Grade 12 native English-speaking person.
Original: WWE Superstars , is a professional wrestling television program for World Wrestling Entertainment ( WWE ) that features wrestlers from all WWE 's brands : Raw , SmackDown and , at one time , ECW competing against each other .
Simplified: WWE Superstars is a professional wrestling television program produced by World Wrestling Entertainment ( WWE ) that is currently airing on WGN America in the United States .