If Henry IV survives longer, that means Richelieu will not be able to come to power. Which in turn means that when New France is founded, it will not be closed to Protestant settlement AIOTL. So when the Huguenots emigrate at some point, they will go to Canada, giving it a much-needed population boost. If this happens early enough, the French might be able to keep pace with the English colonial population growth. Keeping the Hudson Bay / Rupert's land French and out of English hands will also lead to New France not expanding down the Mississippi (IIRC they only did so to find new routes once Fort Rupert was established ~1670), so the population can be concentrated along the Saint-Lawrence and Canada.
By the mid-eighteenth century, New France could have a population, if not quite as numerous as the thirteen colonies, at least a fraction thereof. In turn this might make France more eager to hang on to Canada.