as bad as each other

(both are) as bad as each other AND (one is) as bad as the other (US) — (они) друг друга стоят, один другого стоит; оба хороши (ирон.) (=ни один из них ничем не лучше другого)

Example 1: All politicians are as bad as each other. — Все политики хороши — один другого стоит.

Example 2: No matter that we were fighting Nazism then, in his book, both sides were as bad as each other.

Related vocabulary:
[six of one and half a dozen of the other]
[no matter how you slice it]
[одного поля ягоды]
[одним миром мазаны]
[что в лоб, что по лбу]
as broad as it is long