There have been other threads about this in the past, for example:
https://forums.galciv2.com/?ForumID=274&AID=116282#895959
The description for Subspace Annihilator says:
"The Subspace Annihilator is the Subspace Blaster but with a newly engineered crystal that can inflict massive beam weapon damage."
So they are both bugged. Subspace Blaster is a joke and Subspace Annihilator doesn't even exist.
It isn't only the beam-weapon line that is in need of some adjustments.
Here are some weird gun stats:
Technology Mass Drivers III gives both Railgun MK V and Railgun MK VI
(component name, cost, size, sizemod, damage)
"Railgun MK V", 22, 6, 5, 1
"Railgun MK VI", 22, 5, 5, 1
Pointless, either remove MK VI completly or make one of them better and much more expensive with another name.
Quantum Driver follows Graviton Driver IV
"Graviton Driver IV", 33, 4, 4, 3.....6 damage / 8 space.....18 damage / 24 space.
"Quantum Driver", 37, 8, 4, 4.....4 damage / 8 space.
"Quantum Driver II", 37, 7, 4, 4.....4 damage / 7 space.
"Quantum Driver III", 37, 6, 4, 4.....4 damage / 6 space.....16 damage / 24 space.
Quantum Driver I, II and III are all worse then Graviton Driver IV, their predecessor.