No, if it's not a real browser engine, not interested. Sounds like just another Javascript engine with cherry-picked features bolted on, which are compatibility nightmares (see: CocoonJS, Ejecta).
[quote:1e1vcyam]Cocos2d-Js supports running game code as native application in Cocos2d-x JavaScript Bindings without or with little modification
So they support a full browser-compatible DOM, Web Audio API, WebGL and WebRTC? Hmm, I doubt it if it's not a browser.
[quote:1e1vcyam]This approach is about 10x ~ 20x faster than HTML5 games even when they use accelerators like directCanvas
This is probably based on out of date measurements - directCanvas changed name quite some time ago - so it's probably no faster, and likely actually slower on iOS 8 since custom JS engines can't JIT compile.