Not sure if this is intended, but, surely an AI would be able to target something that is moving barely 75m/s sideways from it.
(Server 12000 sector size, 150ms default speed, AI=500)
This means that the only way to deal with these ships is with Beam-slaved lock on rockets, as even beams suffer from a drift in their aiming. The sheer fact that the AI aren't able to process the position for a Hit-Scan weapon means there is something wrong in their aiming algorithms
Cannon missing their mark (alt: http://puu.sh/oB9ZK/03931f78a6.gif )beams missing their mark (alt: http://puu.sh/oBa1L/2f02eed439.gif )