I don't get the methodology. If you have a short-story, and translate it into 10 languages (and translate very well), it should have the same amount of informat

I don't get the methodology. If you have a short-story, and translate it into 10 languages (and translate very well), it should have the same amount of information in it in each translation, no? Therefore the transmission rate will simply be proportional to the time to read the story. This idea contradicts what their study found, no?