Olympics 2016 --- Why Did They Choose RIO over CHICAGO?

Many of you have been wondering whether someone would prefer the beach in Rio or the beach in Chicago.

Here is some evidence to rest the case:-

Rio: 

or Chicago :

Rio: 

or Chicago :

Rio: 

or Chicago :

Rio: 

or Chicago :

Rio: 

or Chicago :

WELL? 

CASE CLOSED!    

(Courtesy of forwarded mail from CN Sum)