The Android Market, now known as Google Play, is full of apps. The problem many tablet owners discover is that not very many of those apps are optimized for the bigger devices. While many apps written for the smartphone screen work fine on the tablet, they aren't written to take advantage of the larger display on tablets.
Many app developers lack the resources to write apps for two platforms, and a lot of them are choosing to develop for the iPad. App developers have many reasons for building apps for the iPad instead of Android tablets, and it is simply a numbers game.
One important number factoring in the choice of platform for developers recently came to light when a game developer announced he was pulling out of Android development. There are too many versions of Android to support, even on tablets, and too many hardware variants to easily make code work properly.
There are tablets running Snapdragon processors, and others using Nvidia Tegra processors. Code has to work on all of them, making both the development and support costs much higher than for the single iPad. That game developer stated they spend 20 percent of their time supporting Android, and it's only generating 5 percent of their revenue. The numbers don't add up for Android app developers.
One set of hardware and one OS to support is much easier than working in the vast Android wilderness. I believe we'll see a mass defection from Android soon, as developers continue to jump ship to the iPad.
Those three million iPads sold in days and that wasn't even a global launch of the new tablet from Apple. The iPad will be going on sale in 24 more countries soon, which will no doubt result in millions of additional sales. The iPad is blowing Android tablets out of the water, and it's going to continue.
As a user of both the iPad and Android tablets, I can attest to how much better the app selection is for the iPad. There is literally an app (or several) for just about everything, and generally of far better quality than on the Android tablet. It is a situation that is likely to get even worse for Android, and there is nothing changing to improve that.