Tournament rules clarification

[iash]

Last night I was watching WSOP (again), and something occurred to me. The final two players to get knocked out (which determined 19th and 18th place) split the prize money..and the announcer claimed they "split 18th place".
Conversely, on the WPT, if two players are all-in & both get eliminated, the higher prize money goes to the player who had the most chips before the all-in.

Are the rules different for these two tournaments, or am I missing something?

What is considered the standard? (Trying to resolve an argument from last nights home game.)

-iash