cocos2dx or wiengine ???

hi guys, i gonna starting to developing games and i found these two frameworks games.
and the two of these seem to be a cocos2d based. is this true?

Wich is better?
wich has a better documentation?

thx !

Is there any top grossing games based on wiengine? Or is there any tech giants using it?
If you prefer Java than c++, and only focus on android, AndEngine is the best choice.
Otherwise, cocos2d-x, of course. Even Glu, Zynga, Kongzhong, NetDragon are using it.