The core campaign is the same from DS to XBLA/PSN. However, here's a few of the changes...
- all the shitty, useless units were redone from scratch, and now they all are very viable unit options. A couple of them, imo, are now the best units in the game.
- all the imbalanced attacks, defenses, hero spells and artifacts were fixed
- scrapped about 40% of all the artifacts and replaced them with better/more balanced ones
- added multiplayer-only artifacts you unlock as you rank up
- rebalanced many of the boss fights and harder battle sequences.
- made HD art