Hello Markus,
I can understand why you've been asking, but Piet is a person you can trust for 100%!!
I've had the situation that I met Rock'n'Rolf a long time ago in studio in Hannover for the recordings of "Victory"! he talked to me about their "new drummer" Angelo Sasso, who definately doesn NOT exist! Rolf used a drum amchine on Victory.
BUT: for example I've been in studio for the recordings of "Megatropolis" from Iron Savior and I myself have been kind of shocked, how good a drummachine or drums from the pre-production sound. But I've been live with the band (Thomas Nack) in studio recording the drums. Check out the video from it:
http://www.iron-savior.com/multimedia.php!
It really is a bit scaring how similar it can sound, although it's an acoustic drumset recorded live! Of course the sound is "fixed" and made much better than acoustic only, because it would be far too difficult using 100% of acoustic sound for recordings!
For the 3rd SC album I try to promise that I will do everything to join the band in studio and make a report for you as well! Ok?!
Will tell more later, I am of to EDGUY fanclub meeting now!

Harald.
PS.: Thanks for translating!