I don’t think RN can use a JIT at all on iOS. Only WKWebView processes can due to Apple’s security model. This makes Capacitor JS significantly faster for certain workloads
You should try to communicate more forthcomingly that CapacitorJS bundles the webapp with the native binaries, which means that you get better startup performance, but at the cost of not being able to serve the webapp fresh from the web (instead having to go through app store review process on every update like with native apps).