More plants does not always equal more weight. So stop thinking the more the merrier. Yield is all about the light (watts is weight), and more plants need more light. As long as every single lumen produced by your bulb is absorbed and converted to energy by the green of the leaf, it does not matter if you grow 1 plant or 100 plants under that bulb.
New growers brag about home many plants they can fit under the light. Experienced growers know it’s all about how few. Seasoned growers know this because they don’t want to trim the 100 plants you grew per light in their six-light garden!