Why Moskva loses the design comparison with Bearn

Which was the worse aviation-ship design, Bearn or Moskva?

Moskva, narrowly; Bearn had useful ideas spoiled by propulsion and political decisions, while Moskva's weaknesses were more fundamental.

An aesthetic comparison turns into a criticism of the decisions behind Béarn's conversion. A hull intended for a turbine-powered battleship became an aircraft carrier using a mixture of turbines and vertical triple-expansion machinery. The resulting reduction in speed is treated as a particularly damaging choice for an aviation ship. Moskva receives the worse overall judgment, although the preference is narrow. Béarn's conversion is considered frustrating because useful ideas survived alongside choices that reduced its capability.