Both the BC and Mothership can attack while moving, however the mothership is retarded and will retarget its attacks instead of focusing on one unit if you tell it to target a unit then give it a move command. BC will still target what you selected even after getting a move command. I would like mothership buff to fix this gamebreaking design flaw.
Why is this? is it because protoss brain so smol it can’t remember its commands like a terran BC can?
The way you phrased it was very beautiful and I tested it in the unit tester and you are correct. But I think this is more like a bug than a balance problem.
Units will tend to prioritise the next unit on the aggro table which is closest to them. This doesn’t apply only to Mothership, but every other unit in game.
Certain units will have a higher aggro priority compared to others.
If you need a table, you can check out the exact numbers here:
Target priorities is not what is being discussed here. If you use smol brain protoss unit like mothership or pheonix it will not remember its target after a move command. However big brain terran BC will.
What I am talking about only applies to units that can attack while moving.