In case by case [accelerometer-based automatic rotation] can allow more (ore place more efficient) text on screen because the amount of pixels from left to right increases a lot (increases with about 100%).
Really! Wow. If you'd combine this with the magic insight that the N97 is very much like the N900 maybe we should all simply buy a Nokia 5800 right now!
Fortunately, one of the nice areas Nokia N900 shines is that it has a OMAP3; much more powerful than either a Nokia 5800 or Nokia N97.
There are many more differences no matter what marketing guru naysayers would want to make you think.