Android fans keep arguing that seven inches is all you need, and Apple’s ten-inch iPad is overkill, ignoring the very obvious fact that Apple must have created hundreds of prototypes before deciding on the iPad’s form factor. (Clearly, the fact even Google admits Android’s not suited for ten-inch screens is TOTALLY IRRELEVANT.)

Gizmodo just reviewed the Samsung Galaxy Tab. Aside from the box-quote strap—“A Pocketable Train Wreck”—Matt Buchanan nails what the problems are with all these seven-inch iPad wannabes:

If you take iPhone apps and simply scale them up for the iPad, most of them don’t feel right. If you take Android apps and scale them up for the Tab, the majority of them—Twitter, Facebook, Angry Birds—work perfectly. That’s because the Galaxy Tab is small enough that apps simply blown up a little bit still fundamentally work. Which means, conversely, that there’s almost no added benefit to using the Tab over a phone.

And while the iPad’s keyboard—especially in landscape—enables seasoned users to type at speed, things change dramatically as you move from a 4:3 ten-inch display to a widescreen seven-inch display:

In portrait, it’s like tapping on a massive, nerdy phone. In landscape, it’s just dumb. You still have to thumb type, only you’re stretching out further, and text entry swallows up the entire screen. […] In other words, you get the worst of a phone’s input problems—amplified.

Along with calling some of the default apps “Chinatown knockoffs of Cupertino software”, Buchanan suggests the Tab is:

[…] like a compromise’s evil twin, merging the worst of a tablet and the worst of a phone. It has all of the input problems of a tablet, with almost none of the consumption benefits.

On first seeing the slew of seven-inch tablets, I wondered if this would be the case, and, unsurprisingly, it is. Sadly for the hardware guys, this isn’t easily fixable either—most of the issues are simply down to the form factor being wrong for most use-scenarios and input types.

Here’s hoping someone sees the light and starts challenging Apple next year with a full-size tablet, because only that will drive Apple to improving the iPad with any urgency.