Gearbox blew the production completely.
For different reasons than they did Duke Nukem Forever, they outsourced CM to the smaller studio Timegate, and they took the fall for it, as they're no longer around.
You wanna know how bad the whole thing was handled? Sega and Gearbox were sued by a fan for false advertising, and the case was actually looked at in a court of law. That's how bad it was handled.