With the German air force being able to keep about a tenth of whatever they have bought operational that would be good news for Airbus. Say they need 5 tankers available reliably for vital operations they would have to order 50 units to achieve that goal, close to one year A330 production at present rates. Clearly they will blame Airbus for all their maintenance, logistics, political and other problems as they are doing with the A400, their choppers and whatever else they try to keep flying. Seems to me that no one else flying those same aircraft has problems to the same extent. The Germans even complain about the performance of the H+K rifles they bought and accepted per their own specifications (after years of usage they detected the rifles become less accurate as the barrel gets hot / has anyone heard of a gun where that is not the case?) - err, that's the army of course and not the air force.
"Two things are infinite: the universe and human stupidity; and I'm not sure about the universe." (Albert Einstein, 1879 - 1955)