You can not say that about pursuing prosecution, as that is at least intended to be an adversarial process, anomalously high conviction rates do indicate to me a corruption of justice proceedings. Acquittals in China are quite rare, for instance. The reason is that the CPC considers itself the source of justice and sees no issue with doing away with impartiality in matters of political importance.
99% seems too high. On the other hand, outright acquittals are very low in Germany, as well (as they should be).
Outright convictions for everything the prosecution charged are also not too common, but that the prosecutor deems something illegal and grave enough to charge, the court concurs by opening proceedings, and then in the trial everything falls completely apart basically only happens when the trial brings a complete surprise with it.
And most of those times the "complete surprise" is just a key witness refusing to testify or not remembering anymore (as it happens too often in domestic abuse cases).
