I agree with last poster,and also will add that after a cold Winter and die back the fruits will ripe much later in the season,so in a said climate the weather might be much colder and with more rain in such a situation ,and that will have result in lower quality fruits,compared to when the tree would have been ripening at the optimum time.
As for the age of the tree,there are 2 ages ,to most every fig tree cultivar.
-The age of the exterior wood,which is a continuation of the original tree that grew ,for possible hundreds of years,and it was continued grown from cuttings,(as per cutting from cutting).
-The age of the roots ,that is counted from when the new tree rooted from a cutting.
Seedling grown from seeds,are the only fig tree that have the same age,on exterior branches and on roots.