What is more productive for eating? Take carrots, for example. If I plant giant variety carrot seeds in a 5-gallon pot compared to miniature variety carrot seeds in a 5-gallon pot, and if my goal is only to harvest 5 cm baby carrots, don't I get faster results with the giant variety? When growing onions (giant onion variety) planted on the same day as normal variety of onions, don't I get bigger onions in less days? Let's not talk about compost, fertilizer, or water. Really interested in this question.
Giant Vegetable vs. Dwarf/Miniature Vegetables
Well, this is an interesting question. I don't think it has a "yes or no" answer. It depends so much on the type of vegetable and the variety you're looking at, as well as your personal taste. For instance, you may be quite happy with the taste of a large variety carrot that's pulled up when it's only 5cm, but someone else might not care for it. Why don't you try some experiments on your own, and let us all know what you find.