I understand the phrase originated in an older film (possibly Casablanca?):
"So you talk the talk... but do you walk the walk?" (Meaning, "do you do what you say?")
Stanley Kubrick reused it in "Full Metal Jacket" and it appears all over the place now, it's becoming a bit of a cliche, used in different forms (as you quoted, for example)
But is this relevant to anything??
Red