The extracted pack has much less CODEMASTERS in it than the Awesome Patch. Meaning that it will give you a better chance at recieving some new arenas, backgrounds, components, etc. As i said in my RA2GE thread, the Awesome Patch has 80-90% more unlockables and 69 codes all together (this is really the number of all the codes... I did not plan it that way) as opposed to the extracted version which has around 5 or 6.
The Awesome Patch also has a more detailed splash page and more 'knickknacks' such as the CodeJournal.