You know why it's doing better on Android? Because iOS has much better games in the same genre as pocket legends. Maybe this is just a story about how android users are so desperate for games - any games - that this "ok-ish" game on iOS turned out to be a real windfall for them there. Good for them.
On iOS I'd rather play KnightsRush or battleheart (or the new space game, don't remember the name but it makes pocket legends look like the retarded dos era game that it is) any day.