The US defense establishment does a great job of pushing the idea that America is weak.
My favorite story goes back to the Reagan administration. The Gipper really needed a way to make the Soviets look powerful, but by any standard the US was miles ahead.
Then they came up with a new measure that put the soviets on top. American missiles were much smaller than their Soviet counterparts, the same way a modern bullet is much smaller than a rock hurled from a sling. "Throw weight" measured the size of Soviet missiles; the chicken hawks could scare Congress with tales of how big the enemy weapons were.