Police officers fear invidious comparisons.

警官们担心不公平的比较。

《柯林斯英汉双解大词典》

These invidious comparisons are hardly exaggerations.

CENTERFORSECURITYPOLICY: Center for Security Policy | Cover Up: The Senate-House Investigation into Intelligence Failures to Be Run by George Tenet��s Long-time Subordinate

The committee's answer is that its job is not to make cross-country comparisons, which can often be invidious, but to reflect changing trends within individual countries.

ECONOMIST: Race relations