Simplify the following text for a Grade 9 native English-speaking person.
Original: brand was Kurt Angle versus Rey Mysterio versus Randy Orton in a Triple Threat match for the World Heavyweight Championship , which Mysterio won by pinfall after executing a 619 and a West Coast Pop on Orton .
Simplified: brand was a Triple Threat match for the World Heavyweight Championship between champion Kurt Angle , Rey Mysterio , and Randy Orton . Mysterio won the match and the World Heavyweight Championship after pinning Orton following a 619 and a West Coast Pop .