The German capital-ship fleet was overestimated as a whole

What First or Second World War ships were overestimated in the way NATO initially overestimated the MiG-25?

The entire German capital-ship fleet is the clearest naval example.

The German capital-ship fleet is the choice for an overrated force. The judgment is that its reputation and perceived threat exceeded its effective qualities. Aircraft whose dramatic performance rested heavily on one engine-centered design feature offer a comparison. An opponent's intimidating image needs to be weighed against the performance of the complete system.