A tale of two Presidents, Or, Semper Fi vs. a "tepid response"

Here we have an illuminating contrast: the United States Marines greeting President George W. Bush on Labor Day versus the Marines greeting President Obama at Camp Lejeune last week. Wild enthusiasm for “our Commander in Chief” vs. a restrained and skeptical politeness, what a newscaster described as the “mostly you would have to say tepid response.” What should we make of that?