I'm not sure that information is correct. I've been a Torque Game Engine license holder since roughly 2002/2003. I've recently purchased Torque 3D and I was given a TGEA license along with that. TGE has never used Bullet physics, nor has Torque 3D. Now it's possible TGEA at one point supported Bullet, but I can find no references to it on the forums or via Google. The only thing related I could find is a resource on adding Bullet physics and removing PhysX support for TGE, TGEA and Torque 3D.
@Knocks, I'd really like to know where you found your info. I'm not saying you're wrong, just that I couldn't find any info on it. I'm actually working on porting Torque 3D to Bullet, so if there was a problem, I'd reaaaaallly like to find out about it sooner rather than later.