He is probably sniping and may also have no center. Both are allowed tactics. Unless of course he actually cheated but I know that lag can cause other players to literally teleport around including their ships. And then there are the infamous lag-shots that (at least partially) ignore armor. But it is possible that he cheated.
Please post here if you are convinced it was a crime:
Tip: if you PVP, ALWAYS record. You are gonna need it sooner or later in this game.