The simple fact is that gaming on iOS is the biggest money maker.
Games alone represent 17.5% of the total App Store. The next closest being iBooks at 10%.
15 of the top 25 paid apps are currently games - Apple know this and that's way there was such a focus at the iPad conference on gaming. Having big names like Epic and Namco there was to send a message.
I'd say that's more from the iPhone/iPod touch side of things than the iPad...
Apple aren't stupid and pushing the iPad as a gaming device would be totally bizarre. It will never be its main focus.