难兄难弟
nán​xiōng​nán​dìnàn​xiōng​nàn​dì

equally bad

难兄难弟 (難兄難弟) nán​xiōng​nán​dì
equally bad expression
a figurative expression used when one person or thing is just as bad as the other; two of a kind
equally matched expression
hard to differentiate between two people or things because they are so similar in quality, talent, or status (originally referring to elder and younger brothers)
难兄难弟 (難兄難弟) nàn​xiōng​nàn​dì
fellow sufferers expression
People who share the same misfortune or are experiencing the same difficult circumstances together.

Frequency
Movie subtitles
0.090 per million appears in 0% of films
Written text
0.370 per million

Sources
Definitions
CC-CEDICT
Frequency data
SUBTLEX-CHBCC Corpus (BLCU)