IIRC Cloudflare Workers run at each Cloudflare PoP, which have higher geographical density than AWS regions, so latency experienced by end-users may be lower.
According to this[0] blog post Lambda@Edge has significantly longer latency (due in part to a smaller number of locations). Cloudflare also uses V8 isolates instead of whole VMs, so much lower overhead. Disadvantage is that you can only run JavaScript and WASM.