Which vehicle is the most powerful?

Question

If the following vehicles were to play tug-o-war with each other, by attatching a VERY strong rope between them, and pulled in opposite directions at full power, which of the following vehicles would be the most powerful to least powerful?

Here are the vehicles and approximate weights:

Freight train (Anywhere from 120-300 tons on up, but for the one in this contest, let's use a 120 lb train)

Abrams Army Tank: About 60-70 tons

Bulldozer: Between 50-80 tons

Boeing 747: About 190 tons unloaded

Answer 1

Bulldozer.

They were designed for pushing and pulling against dead weight.  They have the best low end torque.

Likewise the 747 would have the worst low end torque.

Good Luck...