it's not always the number and size that determine the outcome of a battle but rather the heart and determination. US vs vietnam, USSR vs Afghanistan, Sasanian vs Muslims, Romans vs Barbars. History is full of these examples.
btw,
Ab keh az sar gozasht cheh yek vajab cheh sad vajab. US can already dominate the sea against the entire world. How is spending another 3 billion dollars going to change anything?