Blastoid, there is obviously no point in arguing with you on this subject as you will not concede that your opinion is faulty. However rest assured, that the majority of operators will rely on and follow TCAS RAs to avoid potential midair collisions regardless of ATC errors like Ueberlingen or pilot errors. You don't have to stray too far from home, just ask any Qantas pilot who regularly operates in Calcutta FIR for instance.