cplusplus.comvscppreference.com

Cppreference edges out Cplusplus significantly on homepage messaging, 60 to 42. Here's where the gap comes from.

Cplusplus is clearer about what it does (30 vs 22 on clarity). Cplusplus is better at saying who it's for (ICP: 45 vs 15). Cplusplus's targeting is decent, while Cppreference's is generic. Cppreference has a much stronger pricing page (90 vs 0). Cplusplus doesn't have a detectable pricing page at all.