Why people call wwe title a world title?

Its not called world title the belt looks like a toy. World heavyweight title has better looks more profound known in all sports. World Wrestling Entertainment champion means u only the champiion of wwe its more like entertainer but the World title is serious business means the champ of entire planet. Thats what cena realised and wnt for world title. Its a surprise he didnt changed the title like wwe lol. Do you think World tite is better? why or why not?