Google Play Store has less regulations on DMCA and they take less of a cut for your earnings. It is more oversaturated however so you're gonna have to do some killer advertising on your game.
Apple Store is less cluttered but they are way more annoying about DMCA and iOS porting is a huge pain in the ass. A friend of mine has been developing a game for Iphone and he has to do a whole bunch of crap like memory allocation and kernel fixing.