Do we want to even metaphorically equate winning with life and losing with death?
No we don't. Well, I don't anyway if we both lose.
What was actually being discussed were the benefits of improving one's skill; making oneself a more well-rounded martial artist, in order to better prepare for the possible attack from a rather unpleasant individual, whose intent might be to inflict pain, or even worse, to turn out one's lights.
Put another way, perhaps cross-training or sparring could help us better manage that 250lb jackass who just kicked sand in your face and is trying to take granny's purse.