It is unbalanced unless you know the correct tactics for the US. Which is I believe to send your tanks through the woods. So I heard.
When we played that one, that was the tactic to put pressure on the Germans initially. Where we found the best approach was to secure the village of Borgoumont and the cluster of buildings on the NE flank of the Germans early to secure their reinforcements entering from that direction. This afforded the Americans some early high ground and an anvil for the rest of the arriving American forces to hammer the Germans upon as they came in from several different points around the clock (IIRC). By mid-game the Germans should be pushed back across the stream and perhaps even some inroads made on the NE flank across there. The Germans should be suffering from some significant Gas Shortages by then as well, so their heavies should have a hard time reacting to thrusts, and they may well be infantry poor to boot.
As American reinforcements continue to arrive compressing the pocket from all sides, it becomes a grinding affair. Early on the Americans have to be fairly liberal with their armor, accepting heavier losses in exchange for a few German armor losses, but perhaps reducing their mobility if not outright destroying them. By mid game and after, the G.I. doughs will have an increasing deleterious effect on on the dwindling German assets, and a more circumspect approach is advised with usage of their armor support. Save the long distant thunder boomers for later in the CG when you're sure to hit almost anything with it.
It's certainly not the most exciting CG of the lot (at least compared to Stoumont) but is a viable CG for having some fun if the German player is the kind of person that can content himself with a few biting counterattacks and establishing a hard nut defense.