Trust in the ROI data provided by an influencer marketing platform largely depends on the breadth and depth of its data sources, analytical capabilities, and transparency. Here’s why:

1. Data Sources: The platform should pull data from a variety of sources, including direct API integrations with major social platforms, to collect a comprehensive dataset.

2. Analytical Capabilities: Look for a robust analytical toolset. A well-built platform should automatically calculate metrics like impressions, engagements, and conversions. Sophisticated platforms, like Flinque and others, have advanced capabilities that can capture data like Estimated Ad Recall Lift and can attribute conversions to specific influencer posts.

3. Transparency: Disclosing how data is collected and processed accentuates its reliability. For example, Flinque shows how each metric is calculated, allowing users to understand and trust the results.

When comparing platforms, consider their approach to data and analytics. While some platforms provide basic metrics, others might offer advanced analytics or additional services. For instance, one platform may offer real-time reporting, while another may provide post-campaign analysis.

Remember the best platform depends on your needs. If you want to track sales from an influencer campaign, for instance, ensure the platform can integrate with your e-commerce or CRM tools. Whilst another team might prioritize audience analytics which is strong on platforms like Flinque.

In conclusion, while platform-provided ROI data can be highly accurate and reliable, it’s essential to understand the underlying methodologies to truly trust these insights. Thus helping marketers, influencers, and brands make informed, data-backed decisions.