Tho Preto,might be the same cultivar as Madeira Black,the time of ripening might not be the same even if the 2 plants are the same age,Why,you would ask?
Because if one has a mild case of Fig mosaic disease and the other one a different strain of disease that affect the plant strength,it will make the difference ,between getting ripe in August and getting ripe in October.
Here ,in NJ,I have seen better progress in growing Preto,compared to MB.
Tho,it was given to me,as cutting from anonymous source it has the leaves ,identical to the pix of the old tree above.
I have high hopes for Preto!!!