[h4n1]

Latin is "older" than English because Latin has been fossilized for over a thousand years due to having no native speakers. A better example would be French and English. Neither is "older" than the other since both are spoken and learned anew every day.

Of course languages known to us only from a certain time period are associated with that time period. They're a snapshot of that linguistic tradition. Living language traditions don't really permit comparisons of age, because they exist in the present.