Numbers, numbers, numbers... of course Numbers! The game is based on numbers, not magic!
I already tested everything with them, yesterday I almost killed a sera destroyer with a cybran cruiser, by kiting it...
You may escape Aeon destroyer shots, but every destroyer is able to do so and normally aeon destroyers are escorted by mobile shields.
If you are fighting a cybran destroyer and the sera destroyer is not dived, the cybran destroyer will kite you. If you eventually come into range, the cybran destroyer will turn to minimize the distance, so you cannot escape the shots anymore and the cybran destroyer is able to use its torpedo dps advantage too.