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Cohort Analysis is the report specifically designed to compare metrics based on user acquisition date over a series of weeks. This type of analysis allows marketers and analysts to segment users into groups, or cohorts, that share common characteristics, such as the timeframe during which they first interacted with a product or service. By doing so, you can observe how user behavior differs among these cohorts over time.

Cohort Analysis is particularly useful for tracking metrics like retention rates, engagement, or conversion rates across different user groups. By examining the performance of various cohorts, organizations can gain insights into how acquisition strategies affect user behavior in the long term, which can inform future marketing decisions and optimizations.

The other report options focus on different aspects of user data. For instance, User Explorer provides detailed, session-based data for individual users, while Active Users shows the count of users who have engaged with the site within a specified timeframe. Users Flow visualizes the paths users take through the site but does not specifically analyze metrics based on acquisition date. Therefore, Cohort Analysis is the most relevant and accurate choice for comparing metrics by user acquisition dating over time.