After more searching I found on AA's website that FC is allowed 3 pieces of luggage, but the million dollar question remains the weight limit..? I called AA, one Rep said 2x50 the next one said 3x50, but I clearly remember I flew last year the same route, same class, and was allowed 3x70!
We're 3 people traveling, and we can use those extra 20 lb. per luggage! (It totals 180 lb.)