What do you mean more opportunity? I've been thinking about getting a tablet not sure which one yet. Deciding on whether waiting for iPad air 2 or doing some research on android tablets.
That way you wont be restricted to iTunes and you can use whichever store you like more or less.
There's more customization and you don't have to jailbreak to install third party applications.
Among the most obvious reasons, price for one, you get more hardware for the money.
If you enjoy toying and altering stuff, then Android is heaven.