People in the RF community have been saying the same thing for years. It's not that simple. When you get into propagation effects, like RF radiation or light emiting, the entire nature of the beast changes. It's like going from 9 volts to 9kv's The same rules don't apply. Different materials act in differnet manners under different cirucmstances, and there is no way to properly predict a users circumstances under anything except the user putting the device to work and debugging it. Everyone wants their device to be the best, of course they're going to place their device in the best light it can be placed in.