I would say Homer displayed dead gameness, way beyond deep gameness, and would have stopped 99.9999999% of all dogs on earth his weight.
I also think
the refusal to die is a form of gameness
Some dogs (and strains of dog) go into shock easier than others ... or "lay down" to severe injury and die easier than others ... whereas some dogs just
WILL NOT YIELD ... even if hopelessly behind, hopelessly outclassed, hopelessly injured ... they just
will not be denied.
That is
a form of greatness, over and above mere "athletic ability" ... it is intangible, it is hard to measure ... but WHEN YOU SEE IT ... dogs that do not have this kind of spirit just won't do
And, very often, dogs like this will "scare the quit out of" most higher-ability (front-running) athletes ...
And it is this spirit which is (and should be) the essence of our breed.
Jack