The 200 is smaller and lighter, the 1st gear is slightly lower (less torque multiplication), the 1-2, 2-3 shifts are closer, but the shift to OD is wider.
The 200 in the GN has many special parts - don't expect a generic 200 to hold up to big power without some preparation.

Some comparisons on my site: http://victorylibrary.com/mopar/aod.htm