High start power is generally used when there is a dnager of cogging, auch as in a crawler or with low kv motors which are hesitant to start spinning from a standstill- same apllies to a truck with very tall gearing.
Thats my understanding anyway- I set my start power to low in my gmaxx, and it rarely coggs, just occasionally hesitates once in a blue moon before it takes off like a rocket as I bury the throttle.
