Let's compare Chilean passport with one of the world's best – American.
Sure, on paper the US passport is better as it offers more visa-free destinations than the Chilean one.
But would you want to go these "extra" countries? The US passport will take you (and the Chilean will not) to Brunei, Burkina Faso, Ethiopia, Gabon, Namibia and few other places in Africa and the Middle East. (The only notable visa-free destination that Chilean passport lacks is Australia.)
However, the Chilean passport is still better for traveling because it can take you visa-free to such important travel destinations as Turkey, Vietnam, Russia and the American cannot. Recently Brazil allows US citizenship to receive e-visa to Brazil. Which means that if you are a US citizen, you are no longer required to go to the Brazilian embassy and apply for a consular visa like it was before, but you still need visa.
In fact, the Chilean passport is one of the only two in the world to give visa-free access to every G8 country – the US, Canada, the UK, Japan, Germany, France, Italy, and Russia.