When it comes to ship-to-ship damage potential, a ship with five ROF-3 weapons is the same as one with five DMG-3 weapons, all other things being equal. However, the ROF-3 ship will pay 33% more for its weapons, because it can more effectively combat fighters than the DMG-3 ship.
Ok, I dont quite get this here. I see the original poster's point that to get the same effectiveness, RoF is actually cheaper relative to the other costs.
Example:
I want a weapon to have a 'firepower' of 4 (meaning it can eventually put out 4 points of damage on a max hit).
If I go with RoF 1, Pen 2, Dmg 2 (1x2x2=4), then it cost 8 times ((1+1)*2*2) x (Range*TH Mod). For say, a Range 12 that hits on a 5+ that would be 32 SU.
If I go with RoF 2, Pen 1, Dmg 2 (to get the same 'firepower' of 4), I'd pay ((2+1)*1*2) x (4 for the Range 12 and 5+) it equals 24 SUs.
So its actually CHEAPER to go with the higher RoF with everything else equal. If higher RoF is supposed to be an advantage (because of targeting Fighters or whatnot), then it should be MORE costly, not less.
The culprit here is the +1 added to the RoF calculation in the SU cost. Since its a flat penalty applied to ALL RoF (increased or not), it always behooves you to increase RoF first in order to bring up the weapon's 'Firepower'.
To make RoF cost more, it needs to have a scaling 'penalty'. So for RoF of 1, no penalty. For an RoF of 2, add .5 and for an RoF of 3, add 1
Example:
In cases above, the cost for the 1-2-2 weapon would 1 (no penalty) * 2 * 2 = 4 * 4 (for the Range 12/5+) = 16 SUs.
For 2-1-2, it would 2+.5 ( RoF penalty) * 1 * 2 = 5 * 4 = 20 SUs
Now you are actually paying more for the RoF vis a vis what would you pay to increase the weapon 'firepower' via Pen or Dmg.
So while the base rules of adding +1 to the RoF 'cost' seem to make RoF the more expensive attribute, its actually 'cheapening' it by diluting the raw value (going from 1 to 3 is three times on the actual scale, but with the +1 its going from 2 to 4 which is only double on the actual scale)
Hopefully I'm making some sense here. Is there something I'm missing in my calculations? Is there some reason someone would rather have increased Pen or Dmg over increased RoF (everything else even)?
Thanks for your time!
Edit...further example:
When it comes to ship-to-ship damage potential, a ship with five ROF-3 weapons is the same as one with five DMG-3 weapons, all other things being equal. However, the ROF-3 ship will pay 33% more for its weapons, because it can more effectively combat fighters than the DMG-3 ship.
Unless I'm missing something, this is not the case at all. A Weapon 3/1/1 is actually CHEAPER than a weapon 1/1/3, not more expensive. The multiplier is as such:
for the 3/1/1 its ((3+1)*1*1) which = 4
and
for the 1/1/3 its ((1+1)*1*3) which = 6
So you are actually paying more for a less effective weapon, not less.
Again, unless I'm missing the obvious here.