Comparison
G2 vs Capterra for competitor sourcing
Both list software vendors in overlapping categories. The useful question is not which is bigger, but how much of what you collect from each is deliverable and unique.
Measure overlap
Collect vendors for one category from both, merge on domain, and count the overlap. Overlap shows how much a second source adds.
Measure quality
Verify the merged list with a source column. Compare the valid and role shares, and the number of unique valid addresses each source adds. Review each site’s terms before collecting.
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