The MCC Dashboard separates Search CTR and Display Network CTR on the Performance tab to make it easier for client managers to view client account ad performance by type of network. This helps you more quickly assess the relative effectiveness of advertising on the search vs. Display Networks across client accounts.
However, it's important to remember that many variables impact performance on these networks, so factor in these issues when comparing performance statistics by network. To learn more, you can check out our Report Center FAQ about the differences between search and Display Network performance statistics.