This estimate of capability depends heavily on the questionable premise that a theater commander would be loath to use a weapon beyond its tested capability -- although this is what we did with the Patriot in the Persian Gulf War.
Concurrently, with few good options available for a resolution of the situation in Gaza, American policymakers should be loath to encourage a repeat in the West Bank out of a misguided and what would be ultimately foolish attempt to gain brownie points internationally.