Apparently Froyo has some better integration with corporate servers (things like giving the Exchange server administrators some controls like BES servers do). Soon that advantage will go away.
The Droid Classic series is a nicer fit than the X since the physical keyboard is a win with former BB users, sadly they'll quickly find it lacking compared to RIM's fantastic keyboards but happily they'll also discover that the on-screen keyboard isn't nearly as bad as they had thought. I think of the Droid's physical keyboard more as training wheels for Blackberry users
Remember that commercials are about marketing, by mentioning corporate email they're making people stop and think "can I replace my Blackberry with a Droid?" Once they've made that connection they may realize that any modern Android phone can handle corporate email and make a broader choice.