I can vaguely recall that back in the time of Office XP/2003 there was a difference in features individual Office programs had.
For instance, I believe Excel didn't have XML export features in basic editions, but had them in Professional edition.
Is that not true anymore for Office 2010?
The comparison chart only tells whether a program is included or not. I couldn't find a more detailed chart on MS website.
Am I safe to assume that if a program is included in an edition, then it will have all features, as if it came from the Professional edition?