This is a bit confusing: The Article says: "Cocos2d is not considered as powerful as OpenGL ES". This is not an adequate comparison: OpenGL ES is a graphics framework whereby Cocos2D focuses on simplifying game programming. Actually Cocos2D uses OpenGL ES to render the graphics. Even OpenGL ES 2.0 with custom shaders is supported already in the current alpha Version. This is very much like comparing apples with oranges.
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