Wouter, I think that trying to judge any of the designs solely on the basis of computer predictions is not fair. First not everyone has the same quality of software and secondly anyone who says a computer simulation is 100% correct is full of it.
Its an aid, and nothing more.
The correct way to do this is to build and test, and even then it may take us all a few attempts to get everything correct or better yet acceptable to the majority.
Cheers
RG