Since the choice is not between these new types of farming and pre-industrial-revolution agriculture, that comparison doesn't matter much..

And even pre-industrial agriculture had specific elements which had a yield of less than 1 by this metric, in order to make specific things that humans wanted to eat. Since most humans don't like a diet of grass and oats, the huge excess calorie yield from those crops could subsidize low-yield farming of vegetables, meat and other delicacies.