This article explores the "tracking gap" that prevents marketers from seeing the competitive strategies driving success outside their own analytics platforms. While tools like Google Analytics excel at measuring on-site behavior and campaign performance, they offer little visibility into competitors' creative testing, placement strategies, and optimization workflows across native advertising, push notifications, and other alternative traffic channels. The article distinguishes between "that" data (what happened in your campaigns) and "why" data (why competitors are succeeding), showing how dedicated ad intelligence tools can bridge the gap. It also outlines a practical competitive intelligence framework that combines internal performance data with external market signals to help marketers move beyond reactive optimization and build strategies informed by real-world competitive activity.