In support of that hypothesis, migration to Brazil came mainly from the north of Portugal, where the language was born. Also, Brazil was spared the strong Frenc

In support of that hypothesis, migration to Brazil came mainly from the north of Portugal, where the language was born. Also, Brazil was spared the strong French influence in the XIX century. Nowadays, the pronunciation of Lisbon (center-south) actually loses information (deemphasizing and even omitting some vowels and losing other distinctions like -om/-am into ão) wrt others, so it's hard to imagine evolution to have happened the other way.