I agree. I run 300+ watts of LED light for eight square feet in my tent, and 100 watts for my two square foot cabinet.
If I was trying to light sixteen square feet to flower in, I’d go with two of those. That would give you 30 watts per square foot, which is adequate.
First a big sorry for my late answer. I had some turbulences in my life lately. First had to change my flat and find another. Then moving… Then f**king Covid-19…
I bought two #HGL 260 W QB online in Spain. Paid around 600 Euros. Finished my first grow of 6 plants ! Got very excellent buds with this light and much help of this forum