Here's a breakdown of the scenes unique to the AC, I'll keep adding to this post as more scenes are found.
1. When Lilly first meets Jack, there's a short shot of him speaking/whistling to a bird. Lilly says 'you're so clever'
11:22 - 11:24 2sec. This would slot in at 11:40 in the DC.
2. Right after Jack and Lilly meet, there's a scene of Jack helping Lilly across a stream. The tail end of this scene is in the DC.
11:30 - 11:49 19sec. This would slot in at 12:30 in the DC.
3. There's a longer intro into the Lilly kissing Jack scene where you see her walk up to him and kneel down.
19:00 - 19:14 14sec. This would slot in at 23:41 in the DC.
4. When the whole Winter transformation is happening, there's a shot of a tree being hit by lightning.
20:40 - 20:42 2sec. This would slot in at 25:41 in the DC.
5. The actual moment of the Alicorn being hewn off by blix is missing in the DC.
21:14 - 21:16 2sec. This would slot in at 26:27 in the DC.
6. Jack stumbling around in a blizzard, calling out to Lilly, after the Goblins leave Nell's.
24:34 - 25:21 47sec. This would slot in at 30:26 in the DC.
7. Jack and Gump are attacked by Pygmies in Darkness' dungeons.
54:22 - 55:13 51sec. This would slot in at 1:11:04 in the DC.
8. In Lilly's dance with the Demon Dress at the very moment that Lilly and the Dress become one, there's a flash of magic.
58:50 - 58:51 1sec. This would slot in at 1:15:44 in the DC.
9. When Darkness is tempting Lilly at the dinner table, there's a shot of a black apple and a glass magically filling with wine/blood.
1:11:33 - 1:11:57 24sec. This would slot in at 1:27:47 in the DC.
10. After the battle with Darkness, there is a montage of scenes showing Gump restoring the Alicorn to the Unicorn. They are interspersed with Jack recovering the ring, which is in the DC.
1:21:42 - 1:21:45 3sec
1:22:02 - 1:22:11 9sec
1:22:36 - 1:22:56 20sec
1:23:04 - 1:23:14 10sec
1:23:19 - 1:23:33 14sec
56sec. This would slot in between 1:42:56 & 1:48:45 in the DC.
Total = 3.5min
All I can remember in the EC is the scene of Oona spying on Lilly just before the Demon Dress dance, saying 'Look at your princess now'.