Well think about it for a moment. What I mean is that they already know that they will be accused of lying regardless, so why bother "fabricating" an ambiguous account when they could just as easily lie and claim that they found a giant Hamas command center?

In other words, they have no incentive to lie about the attack having achieved ambiguous results unless they are actually telling the truth. If you are going to lie, and if you know you won't be believed regardless, why not go whole hog?

Again, they have no incentive to half-ass it unless they're simply stating the truth.