I am sure it is Lag/Latency related. There is no speed difference for Miners. Just take T5 for a good example. When Divebombs are coming and you react correctly, you will ALWAYS see your character going up first and all others following you. But funny thing is, for all other people it is the same. But in fact it isn't. What you see on the screen and what is really happening, are 2 different things.