Same configuration, different results. Maybe you caught a short window where the restrictions were looser while they were adjusted to include iPad gen3. Alas...
One thing I did months ago, was use an Apple Configuration Tool to tell the iPad to load iMovie. That was before iOS5 came out - it didn’t work then.
But, magically it loaded just fine last week. I do feel sorry for you, and I really don’t understand the blatant stupidity of Apple for refusing to let a user give them money to buy an app - that will motivate them to buy a Mac Mini to get the full-feature iMovie to complete and compliment the iPad.
I mean, does Apple really expect us to believe that everyone uses the iPad2/3 camera to shoot every photo/video; then edit and manipulate the files on the iPad? Heck, I’d wager a month’s paycheck that the video’s they show at he Demo were shot on professional video/cameras and then TRANSFERRED to the iPad2/3 - just like we do with the origional iPad.
This is a part that really chaps me off a bit. The iPad1 is barely 2 years old, I expect better support than this. Being denied the ability to use iPhoto or iMovie on the origional iPad is little more than a rude slap in the face.