From what I have been told, and what I practice:
Attitude for speed, power for height is good in a light aircraft. Power for speed (constant attitude) is more like how it's done in a heavy.
Maybe this explains the response t&g received from the drivers of heavier equipment.
In a similar vain (but speaking very generally), in a light aircraft power is increased in a turn (esp. with increasing AOB), in a heavy aircraft it is generally
decreased??