Do not compare logos
Both CloudFront and Fastly can support serious production workloads. The right comparison is how each behaves with your cache keys, invalidation workflow, edge rules, observability, and team skills.
Measure origin pressure
Look at cache hit ratio by page type, not only the global average. Category pages, product pages, search, cart, checkout, and media assets have different caching rules and business risk.
Choose operational clarity
A CDN that your team can understand during an incident is worth more than a theoretical feature that nobody can safely operate.