I suspect that motor torque has as much to do with performance as gear ratio. My MTH 19th-century 2-8-0 has a gear ratio of 28:1, and slow speed performance out of the box was rather poor. It got better after a great deal of breaking in, but this is the best it can do (under conventional control; I don't have DCS). Not bad, but if you ask me, not that great. And yes, its top end is way too fast.