Apple's philosophy as far as the ipad's concerned, is the same as it was with the original iPhone.
They make sure that they concentrate on getting the root core features nailed: The touch screen, the multitouch, the experience.
If these basics are perfect out of the gate, they know that'll be enough.
Trust me, if the iPad had a laggy, unresponsive touch screen and poor viewing angles, it would have flopped.
That's more important that maxing out on specs(as far as Apple is concerned).