I think some people are misunderstanding the main issue here, so allow me to emphasize:
Starbases do literally nothing to ships.
Not a scratch. Any ship with a weapon can take out any starbase ----- no matter what.
I just had a tiny, 6 HP, 4 attack, 0 defense ship destroy a 21 attack (7/7/7), 9 defense (3/3/3), 80 HP starbase without any damage. That should not happen. Starbases defenses aren't just ineffective, they have no effect whatsoever. There's no theory/lore excuse here, either - starbases have all weapon types, therefore a ship that can hit a starbase should be in range of that starbase's weapons. A starbase with attack 7/7/7, defense 3/3/3, 80 HP should be able fight as effectively as a ship with similar stats, minus maneuverability (which should not make ships invulnerable to bases... effective, perhaps, but not auto-win)
I'm assuming this is a bug, but the statement made on the latest stream makes me think the developers are completely unaware that starbases are broken. The constructors forgot to plug in the missile launchers.