Well, I only know that the API level of the current android version is equal to a PSP vita. The latest version which should be the ART said that it should solve the API crisis on android. However, it may also sacrifices some of the un-updated apps which isn't patch up for the latest and newest chipsets and GPU's on the android smartphone market.
For every Android CES. I expected a new change to it's API since ios now has metal which improves and optimizes all new apps that was released on the market. I remember the recent introduction of the Unreal Engine 4. Many have said that android could get this engine as long as they change the API. But it never came. Apple is taking a nice road of improvements since the upcoming ios 9 said that it will further improve performance of the apple devices, as well as the metal API .