Dynamic has B&M standard, dual zone climate control and arm rest with drinks cooler, the arm rest and cooler is not standard on sport. I'll upload a copy of specifications when I'm home (away for Christmas ATM) and it'll show the Dynamic is the top of the range and the Sport a stand alone which is over the Active.
I'll agree that the "armrest" that the Sport supposedly has is nothing like the one in the Dynamic, not sure I'd even class it as one.
The UK specs are listed about half way down here: http://www.honestjohn.co.uk/road-tests/fiat/fiat-bravo-2007-preview-test//?section=prices