When aircraft can carry onboard oil refineries and drilling rigs you can more reasonably compare them to birds. Without that you need to consider ATP vs jet fuel or crude oil vs a dead fish? Skeletal muscle can be 40+% efficient depending on what exactly you’re measuring.
Going head to head vs evolution in a similar design space with similar tools and goals, arranging neurons for useful thinking, is vary different than increasing top speed while sacrificing just about everything else.