No, that's the point. Luffy was goofing around while in G5, while restricting himself from using any type of advanced Haki and as soon as he pulled out an advanced Haki move, Kizaru was flattened. We told you and the other Admiral stans exactly that but you refused to believe it. You deluded yourself into believing that a serious, all out Luffy went toe to toe with a "casual" Kizaru.