Tradeoff between Survical and APS

Also in my observation, ScalarBot wins RaikoMicro sometimes even with a huge disadvantage in energy (e.g. RaikoMicro has 10x more energy, and ScalarBot will die even with one shot). While against Diamond, when in huge disadvantage, even giving away every point of energy gives no return at all (but still better than giving that score to the opponent). It seems that the best energy strategy really differs among different opponents. Against weaker opponents, especially with relatively weaker guns (especially guns that change slowly), bet on survival seems to be the best choice, since my movement could be already learning their targeting very well after performing bad for a while. 

Then maybe the best strategy overall is already what everyone is doing now — be conservative when low in energy, as even against those you have no chance to beat, giving the last few points to opponent should not make a real difference. But the best point may be different for different guns & movements. 

Then may be the best way is to just find it out in a rather brute-force way — and re-do after doing big changes in guns or movement.