Andie007: Tickets originating in Brazil do have much more generous baggage allowance than "regular". If regular non-status Y pax get 2*32kg, then *G get a third piece for free with the same weight, ie another 32kg.
I've had a experience myself which seems to be close to what you are trying: Flying Y as SEN (not Ex-Brazil, but similar baggage allowances, ie 2 pieces of 32kg for Y) and was allowed 3 pieces of luggage at 32kg each.