Lots of things are different in the bonus disc. Basically the situation was that we found out that we could get the mod on the disc if we had it finished and ready in 4 days from the time we were told. At this point the mod really needed at least 2 months more work and was nowhere near completion. Myself and Stainz then spent that time working up to 18 hours a day to get the mod playable. We had great help from a group of very good people such as Ripptide, Wyrmshadow, Akula and Hunter in that time. We werent sure even up to a few hours before the deadline whether or not it would be done. In fact i went to sleep 4 hours before it was due in thinking that it wasnt going to make it. Well as you know we did make it, however the finished product was never playtested and was basically desperately rushed.
The latest version has more units, properly balanced unit stats and gameplay, far less bugs and is basically a completely different game to play. A dozen people playested it for about 3 months, that should give an indication of how much has altered since the original bonus disc release.