Gartman was referring to a widely held belief that Germany refuses to embrace, in a meaningful way, programs that may stimulate the economy in the short-run but trigger inflation over time.
According to the Wall Street Journal, instead, "the German government is cajoling other European governments to continue (or resume) the budgetary austerity programs that have held back European growth in recent years."
In the past, Gartman has cited cultural differences between Germany and the rest of Europe as the catalyst behind this issue, with Germany still bruised by the damage done by the rampant inflation that swept across Germany after WWII. At the time, inflation became so bad, the people of Berlin were forced to trade cigarettes for food, rather than paper currency.
Although events happened more than 60 years ago, Gartman believes the wounds still ache today. As a result, an aggressive QE is unlikely; in turn, Gartman expects the U.S. economy to outperform that of Europe for some time to come.