All you did was argue that you don’t think they were capable of finishing their attack, rather than provide evidence that the Marines thought they weren’t capable of finishing their attack like I asked.
Actually, I'm not arguing anything. I'm stating fact. Their initial operations in Fallujah were not the start of a full blown offensive. They never committed themselves to "an attack". Unless you believe digging into a parimeter is how Marines "attack" a city, you're going to have a hard time providing evidence the Marines ever launched a full scale offensive operation in Fallujah. But if you believe the Marines actually launched an attack, why did they do so before they had the armor and fixed wing support that they requested? Are you suggesting Marine leaders launched an attack without sufficient equipment to succeed?