[quote name='GlassAgate']Was the game a dud, was there poor marketing off it, or was it just a bad time to release it?[/QUOTE]
In general, it just wasn't recieved well. After playing the first quite a bit and enjoying it, and then playing the demo for 2 and hearing everything I have from the people I know that bought it, it just seems generic and lackluster.
The first Supreme Commander was great because it had an in-depth economic system and massive battles. The second basically strips out all of the economic elements from the first, replacing it with the more generic resource management of almost every other RTS game, and drastically scales back the conflicts with unit caps and weakening the super (or rather no longer super) units, instead giving you a research tree to upgrade units with and smaller maps that will have you fighting in much closer quarters. In a way, it just doesn't feel like the same type of game as the original Supreme Commander even though the setting is the same, it's almost like going from Dawn of War 1 to Dawn of War 2 in terms of gameplay.
The second game doesn't seem BAD, per say, but it definitely isn't the best example of the genre by far and no longer features anything to make it stand out from the plethora of other (and many better) RTS games out there.