I don’t think it is time for a conclusion. As we know you may being dealing with a hard plant on hps, I have 3 NL under led and they are all at different stages and hights, you need to consider the phenotype variant.
Another thing is that you will get a yeld from a plant with good light, a lesser yeld with less light but if you are using light for a wider area, shure you are giving power away and the plant won’t grow more for that.
From my experience with 150w lights, led is faster, hps will give you fatter buds.
But 150 is low even for 1 plant so, I have been pushing mine a lot.
Looking forward on your harvest.