Dr Carter did get in to a little of production numbers of plants in this case. Some plants he testified wouldn't have produced any usable material because they were doing poorly. The most he testified was that a couple of the plants looked like they could have produced 4 ounces of usable material.
The biggest problem with MMJ cases is that jury decisions are not usually on legal grounds but there bias towards cannabis. The reefer madness connection.
This is why I keep preaching for people to get on these juries. Get enough hung juries in these cases and prosecutors will be forced to quit charging people for this, like in Kitsap county.