I tried to come up with a short phrase/adage/wise words that perhaps explains the moral of this 'win by trickery' version (which I also think predates the Aesop's version). So I've got,
"Never say never"
"It's not over till it's over"
"It's not brawn but brains"
"Cross all your 'T's and dot all your 'I's" (obviously running out at this point)