Thanks for comments, Gentlemen.
Turns out it's mostly my crappy flying, but I think there's something with the Bus itself as well...
Vilas and IcePack have nicely verbalized what I had in my mind - neutral static stability, no pitch/power coupling and lack of tactile feedback on the stick due to FBW/Autotrim, plus having to chase a moving target (GS mini) with those little TL's...
Still, I think we have to be proficient enough to fly it properly... Thanks for hints, I'll try to get myself back in shape