Growing in pots is also called "Forcing the figs"
Of course The plants do not like to be forced ,but they have no choice,and so ,yes forcing create stress,in the life of a fig plant.
An inground fig grow it's roots as far as 50 foot away from the plant,while in a pot the same 50 foot are circling around the inside of the pot around and around,being constrained to that limited space in the pot.
So the stressed plant in pot,reacts by producing seeds as early as possible which explain why figs in pot fruit earlier.
Like someone else in a previous post mentioned,figs in pots can't tell us,if the cultivar is early ripening or late ripening.
Only growing them in ground can tell that and this is the end of the story about this subject.
My topic was intentionally created to find out if there are another early cultivars I do not have from testimony from other people but ,it got totally misinterpreted,and the goal of my Topic was lost.