Remember hard currency of Europe - no not the euro - Trust? And remember how Greeks lack that currency because of failed reforms and incomplete adjustments?
Here's a nice chart from the EU Commission itself showing changes in economic competitiveness (the EU fetishised) metric of Unit Labour Costs.
In this, untrustworthy Greece is more competitive in 2013-2015 than the best-in-class Ireland.
So if the internal devaluations work their magic, as the EU seems to believe, then by this metric, Greece should have been a roaring success story... with a surplus of Trust to spare some for Ireland.
Then, again, the EU won't notice other factors at play in determining GDP growth. The idiosyncratic ones, like, say, corporate tax inversions and 'knowledge development boxes' or (whispering) taxation double-sandwiches for lunch... Because everything is about Trust in Europe...