This strongly varies with climate (and much more MICROclimate). I was told by plantain growers, that's why they have to examine the plants first in side-by-side growing and then evaluate (usually 15 to 30 cultivars), which plantain is suitable for growing in those specific conditions. Microclimate, soil fertility, soil pH, humidity... that all plays in favor or against different varietes. Nice reading you posted us. Tnx.
But I believe that you will find answer to this very soon.