motor/kv/ system question

[mk351e]

imagine the following 2 scenarios, the goal of both is to move a 12 pound monster truck at the ridiculous rate of 55mph or so, both systems at 6S, and BOTH SYSTEMS HAVE THE MOTOR SPINNING THE SAME SPEED, AND SAME VEHICLE SPEED:

1) 2200kv motor with a whatever-size-you-want pinion, but throttle epa turned way down, truck goes 55mph

2) lower than 2200kv (1700kv??) motor, same size pinion, epa @ 100%, truck goes 55mph

the question - regardless of what you may think about running a monster truck at these speeds, are there any differences between these 2 setups? In other words, is the motor, battery, or esc working harder in either system? My guess is that the motor in both setups should run the same temp, but I'm lost from there.

HELP!