When Fedor used Nog like a punching bag for three rounds but didn't knock him out, was that a decisive victory, or was he "stumped"? Of course, there are 100 other examples of guys with good chins getting pounded on without getting Ko'd, but I am using that example to illustrate how absurd your point is.
Maybe JDS is too small. But he is the 3rd best in the division. Cain is second. If Brock beats Cain and JDS, he will have earned his spot at the top. Going 1 and 1 against Mir ( who is a joke), beating a washed up Herring and beating some Korean can is not indicative of an impressive resume.
He beat Carwin in very unimpressive fashion, but a wins a win-- so to me, he is 1-0 against real competition. If he makes it through Cain and JDS, he will have solidified himself as a top p4p fighter and a deserving UFC champ. Until then, hes just a great athlete with absolutely no skills except wrestling who shops at big and tall.