Not necessarily the same thing tbf. See the graph below which suggests a 6% efficiency gain would equate to a roughly 4% time gain - which puts this effort roughly on a par with what Gebrselassie was doing about a decade ago without modern footwear.
Of course, some of the time difference will be accounted for by the many, many other factors, so take what you like as being down to the footwear as compared to the controlled conditions etc.