The case could be made that poor internal communications are responsible for this interesting statistic. The employees just don’t know what is in the heart of their power brokers?
A more probable answer is that the employees are in fact the most reliable source of true understanding of the heart and mind of an organisation.
Either way, a method of measuring that heart and mind that doesn’t require expensive surveys by tiresome consultants but still ties into existing philosophies and systems of improvement would seem sensible.