Cocos2d Features in Cocos2dx

Hi,
does cocos2d-x support all features in cocos2d iphone v 2.0?

Seems very close to me, but cocos2d iPhone is moving target and solves some different types of problems than Cocos2dx.

What are you asking about specifically?

specifically i’m asking about api and functionality, for example i’m starting to create a game with cocos2d v 2.0 for iphone, can i use for the same purposes cocos2dx without losing any new features which is in cocos2d iphone?