I think Castle should use this whole overrating products thing in their marketing. They could provide a real-world rating, and then a rating using the methods other companies use. Yeah, it would be tongue-in-cheek.
Or, rate it using real-world specs, but also specify the number and part number of the FETs used. Most people will have no idea what it means, but the people that do will look them up and find out how good they are. After a while, ESCs built with 36 x D4RRT5 FETs will be known as the creme of the crop. (Yes, that's a fictitious part number.) Kinda like how CD players used to state how they use "Burr-Brown D/A converters". Not many know what the heck that means, but all the good stuff used them, so it must be good.