In your experience, is too much emphasis being placed on "Talk the Talk" vs. "Walk the Walk"?

If communication dies, everything dies. Each word has impact and value to the listener in communication. One word if used wrongly or emphasized wrongly or paused at a wrong place in communication causes havoc. So you should know what exactly you are talking about and the listener understands it very well. Otherwise do your home work first before you come to a business meeting or talk to a client over phone.