@Yellowstone Special posted:". . . none of the GPs are stump pullers." Really? I have a Lionel Union Pacific GP7, one of the earliest Legacy locomotives and a Lionel Legacy GP30 from a few years later. Both have vertical can motors and will pull a dummy F7B, an F7A, and 7 aluminum passenger cars without a whimper. The GP7 has slightly less power that the newer GP30. In fact, if I ran the passenger train with the GP30 on the point at full throttle, it would leave the track. Must be the turbocharger that makes the difference.
True, I should have been more specific. I was talking about the Pullmor motored models with a single motor, and the limited number of can motored models, also with a single motor.
The primary issue facing any dual motored locomotive with all wheels powered is weight on the wheels and if they have traction tires. Any of the Legacy models have dual motors, I have a few of those as well, no problem with pulling power. I will say, the modern GP9 with dual motors and traction tires is no match for any of my big articulated steam with a single motor. Below is an example with my C&O Mallet with a single motor. 
I tried pulling this train with a Legacy GP9, it was an epic fail, stalled halfway up the grade. The Mallet didn't miss a beat going up the grade, weight really helps. 
