In WWII, when German formations were operationally defeated, they surrendered. The same was not true of the Japanese. Does that mean the Germans had inferior morale? Was the German Army less effective than the Japanese Imperial Army?
No one understands the mechanics of Morale. Both the public and private sector have been trying to tinker with 'morale' for decades, and nothing has yielded repeatable results. Usually, such attempts just expose ideological bias. We know that "Morale" alone will not save you from losing, nor will it give you victory by itself; however, you will collapse psychologically at the first sign of serious trouble without it. But "Morale" is too fuzzy a concept for mathematical analysis. What I do know, is that "morale" is a variable, not a parameter. The same person/culture/army can have +100 morale at one moment, and -100 morale five minutes later. This means morale has to be rooted in something else, something much deeper and more fundamental. It is pointless to discuss this issue superficially using a few hand-wavy examples.