I know all the numbers are not in for comparison, but the boxes look to be about 24" square, or about 4 square feet. 367 grams out of 4 square feet is a killer yield! If I am way off on the box size please let me know.
You are correct about the size of the boxes, but keep in mind they grew up out of the box and were leaning out so the effective area is larger. You can also see how this is going to screw the 3000/80, being between the two taller grows.
Each lamp is 200w. Taken alone it indicates 1.83 GPW from the 3000/90 sample, but it was leaching light from the box beside it. I think the final GPW for the whole grow will be more realistic, but also will end up being pretty nice. If the veg time hadn't been extended to the point the plants grew up out of the box we would have real GPW figures for each one.
Now that I think about it, the 3500K result might not be fair since it wasn't able to bush out as much as the high CRI samples, so all we're really learning is that 3000/90 is better than 2700/90. For that matter, the 3000/90 had a couple inches on the 2700/90... so even that may not be a totally fair comparison. I pointed out the flaw in the test as soon as it became apparent, so I hope nobody has been holding their breath. We'll just have to do it again.