Simplify the following text for a Grade 8 native English-speaking person.
Original: The main event was for the WWE Championship between champion John Cena and Triple H. Triple H came out to the ring on a throne dressed as a Conan the Barbarian-type king , while Cena came out with a tommy gun and was accompanied by a group of `` gangsters '' ( one of whom was future WWE Superstar CM Punk ) in a 1940s Chicago-era vehicle .
Simplified: The main event was for the WWE Championship between reigning champion John Cena and Triple H. Both men came in different styles during their entrances . Triple H came out on a throne dressed as Conan the Barbarian-type king while Cena came out with a tommy gun and was accompanied by a group of `` gangsters '' in a 1940s Chicago-era vehicle .