How good were the Gangut-class battleships compared with contemporary dreadnoughts?
Short answerThey were solid, credible ships rather than outstanding designs, and serious opponents still needed their own dreadnoughts to defeat them.
NotesThe ships were neither world-leading nor easy targets: their size and armament made them viable fleet units in their generation. By the late 1920s an intact Imperial Russian Navy would likely seek replacements, though financing and building them would be a separate challenge.