Hi Sam.
I'm not quite sure what you meant by your first question. Freeze-drying is a process of dehydrating perishables by freezing them then letting the water evaporate out. It isn't kept frozen after that. I would figure that both would have about the same amount of nutritious value as far as CPs go.
Just make sure that the food is thawed before you feed your plants with them. Moisture shouldn't be a problem, in fact I rehydrate my freeze dried BWs before feeding them to my plants.
The worms would probably turn to liquid in the pitchers anyway. Just be cautious that you don't overfeed.
Hope this helps.
