Perhaps you should also look at the number of people who speak Haitian Creole and the number of people who speak Latin.
Then, you may also want to look at the number of people who speak Haitian Creole as their primary (or only) language and compare that with the numbers for Latin.
That may give you a better appreciation for the reasoning behind Google-Translate's prioritization (though I should add that I'd also be surprised if they didn't include Latin)