I completely understand the skepticism but I have followed this mans progress for many grows now, and no this is not wet weight, get real that's a newbie thing. Does anything you see there look newbie enough to give a wet weight?
This is not a joke people, I don't kid around about things like this. This man wouldn't even weight stuff a little too wet. If he says it's over 4lbs per plant it simply is.
Watch high times they have a big article coming out with his grow soon, summer or earlier, you'll have to check. Also he's sold rights to his system to a hydro manufacturer for a lot of money, It will be available about the same time as the high times article.
(I know the bad rep of high times, but still...)
If you still don't believe just look at his own grows (this isn't his he was paid to set it up), his own grows have just built up to this.
I know I know you are going to say he lied because he's trying to sell the system... No, he was paid after the system was proven to deliver by the buyer plus his whole system is posted all over by him as DIY, he doesn't stand to make anything now by lying he's already made the money.
Just imagine those fan leaves stripped and those fat colas dried, they can only shrink so much and then imagine how much of each plant can you fit in a 1lb baggie. No way is that all going to compress into a 1lb bag even after loosing 75% of weight still the volume is just impossible.
It's been over 10 years now that krusty/freedom bucket growers have held the record, which was near 4lbs per plant. He broke that record. This is not the system for everyone though I'm not trying to encourage anyone that shouldn't touch it. (If you change your resevoir just 4 days late in this system after the nutes are sucked dry you will end up with every fan leaf brown and crispy and laying on the floor) Seriously fast growth.