Have you even seen the version of the iWorks apps on the iPad or even just the new Calendar app? Do you really think these things would be possible on an iPod Touch?
It baffles me how people have such a hard time seeing how much better of an app experience is possible on the iPad.
It's not just about the apps. Sure, the apps will be more capable than on an iPhone... so what?
People call it a big iPod Touch because it uses the exact same OS. It wasn't scaled up for a larger screen and no features were added that would make sense on a tablet form-factor. There still must be solutions for general OS deficiencies on a per-app basis. Hell, it
embarrassingly uses the same grid of icons and the 2" slide-to-unlock tab.
They could have added some simple features to really expand the usefulness of the device, more broadly bridge the gap between smartphone and laptop, and take advantage of the screen real estate. Instead, they rebuilt a few apps. It could have been so much more.
You can't print.
You can't view any media beyond the limited formats supported by an iPod (no automatic updates to codecs).
You can't access files on the device.
You can't attach files from the email client.
You can't plug in any USB devices beyond a camera - most notably thumb drives.
You can't open more than one app at a time.
You can't receive an mp3 from email/IM and play it.
You can't say, "There's an app for that" because it's a limited work-around, not a solution. For example, there are apps that support printing. That doesn't give the iPad the ability to print, however. It just means you can print
from within the app.
The most popular printing app
quadruples as a file-storage app (required to print files you cumbersomely load in the app over WiFi), an email client (after you set up your accounts independently within the app), a web browser (to print web pages), and a photo viewer (to print photos synced through iTunes).
Really, that's the best printing method they can devise on the iPad? Even then, it's limited to printing over WiFi because you can't plug in a printer (through USB, a standard fare these days).
Now, I just took printing as an example, but these are the kinds of solutions for many types of apps.