ez talán jobban hangzik, mint a nyerési előny

Lehetőség.

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Note added at 48 perc (2015-12-20 18:43:07 GMT)
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Értelemszerűen.
Ez egy "visszautasíthatatlan előny/ajánlat".

Egy lehetőség

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Note added at 1 hr (2015-12-20 19:08:28 GMT)
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A winning edge jelentésének meghatározása:

Have you ever heard of the 'Winning edge' concept? Probably, yes, except some people. Maybe you heard of it as, like the border between the failure & success or by some other name. These definitions are pretty much the same. But actually, if you go into the subject matter, its not the border or line, which you should cross to achieve the success. It says that, the small changes to the areas that are absolutely vital to your success, can lead to really dramatic results in your overall performance. The successful people are not different in great ways. They are just different around the edges and their vital areas, characteristics.

http://the-sagacious-intellect.blogspot.hu/2012/07/winning-e...

Az én értelmezésem szerint ez olyan előny, amely szinte garantálja, hogy az illető legyen a nyerő. Ha nem kell ragaszkodni a szószerinti megfeleltetéshez (nyerés), akkor talán jól megfelelhet az értelem szerinti fordítás. A winning edge az az előny, ami a nyeréshez vezet, azaz behozhatatlan.

Ilyen értelemben:
"One of the most important concepts ever discovered in the field of human performance is called the “winning edge concept.” This concept or principle, states that, “small differences in ability can translate into enormous differences in results.” What it means is that if you become just a little bit better in certain critical areas of selling, it can translate into enormous increases in sales. In fact, you may be on the verge of a major step forward in your sales results at this very moment just by learning and practicing something new and different to what you have done before.
If a horse comes in first by a nose, it wins ten times the prize money of the horse that comes in second, even though the difference is only a nose, or perhaps a couple of inches, in a photo finish."
http://www.briantracy.com/blog/sales-success/the-winning-edg...

Vagy:
osztalekportfolio.com/blog/2014/12/06/behozhatatlan_elony_hirlevel

(Tréfásan: a nyerő orrhossz) :)