Years ago when I contracted for an Italian charter company we had at that time a few Sterling aircraft on wet lease. . . . . . unmitigated disaster.
Their allowed duty hours were nothing like as liberal as the Italian version ( don't know if that was the Danish NAA or contractural, I suspect the latter) so they could only operate about 2/3 of the flights planned for them. Not an ideal scenario for a company hoping to gain business in the wet-lease arena
I suspect this sour grapes directed at AEU is indeed inspired by the fact that you showed Sterling's inefficiencies only too clearly.
Who, incidentally is your MD (the training Capt ) ?