It's true that android gets new versions when some things are released and can get a gold reward for downloading. But having recently switched my main account to iOS, I have also had many offers to download other games. It seems more games are made by Storm8 and their offshoots for iOS than android, so this kind of evens that out IMO.
I don't think DS for android will ever be equal. There are too many problems with it and it would take a MAJOR overhaul to get it even close to playing as iOS does. I now believe the android game was 'broken' when they released it and can't be properly fixed. any hope at parity that I had is gone.