Advanced Weapon and Utility technologies are just an inefficient way to increase naval capacity [Battleship analysis, updated]
I saw this
thread here on the forum a while ago and it inspired me to do some test. Over there the focus was on finding the best battleship for fighting an equal number of other battleships. Here the focus is on testing the performance of such a battleship versus cheaper, but more numerous battleships.
Warning: The results can be quite demoralizing

.
The Cast:
One of the suggested “Best” battleships for fighting other battleships (with a minor alteration):
View attachment 244653
A cheap mass driver and plasma battleship:
View attachment 244654
An even cheaper mass driver only battleship:
View attachment 244655
And the last contender, a laser only battleship (because results might depend too much on mass driver being overpowered):
View attachment 244656
A fleet composed of only the expensive battleship will face a fleet worth an equivalent mineral and maintenance cost, first when engaging at long range and then at very short range.
Additional Details:
No space borne alien or dlc technology were used. No repeatable techs were used. No Leaders, strategic resources or spaceport upgrades were used. All ships used the same high end drives, battle computers and sensors.
And no claim is made on the cost effectiveness of any of those.
Both the research costs of the high-end weapon and utility (shield, armour, reactor etc) tech as well as the costs of acquiring additional naval capacity are not a part of this analysis.
The Results:
A fleet composed of only the expensive battleship will face a fleet worth an equivalent mineral and maintenance cost, first when engaging at long range and then at very short range.
First 49 Expensive face 93 mass driver + plasma (the number of the later ship type is rounded up):
Starting at long range the cheap design wins with 45/93 ships surviving.
Starting at short range the cheap design wins with 84/93 ships surviving.
Then 49 Expensive face 96 mass driver (the number of the later ship type is rounded down):
Starting at long range the cheap design wins with 50/96 ships surviving.
Starting at short range the cheap design wins with 81/96 ships surviving.
Finally, 49 Expensive face 92 laser (the number of the later ship type is rounded down):
Starting at long range the cheap design wins with 38/92 ships surviving.
Starting at short range the cheap design wins with 70/92 ships surviving.
Due to the demoralizing nature of these results, repeated tests of the same setups did not occur.
Conclusions:
The more advanced and much more expensive ships did not perform nearly as well as the cheaper alternatives.
In effect, this means that equipping your ships with the most advanced weapons and utilities is just an expensive way of increasing your effective naval capacity.
If one wants to make advancement in weapon and utility technology more effective, one could increase their potency or reduce the cost of using these options on your ships.
Changing naval maintenance to be the same for all ships in a certain category instead of linearly dependent on the cost could be an interesting way to create a trade-off.
View attachment 244657
Battleship battles do look nice though.
Update:
It seems at least some part of the poor results from above are due to tachyon lances scaling poorly with the size of the fleets.
I did some additional tests with this:
View attachment 244769
Against the plasma+mass driver from above. (Note that the tachyon plasma should be a counter to the mass driver plasma.)
At 75 of the tachyon+plasma vs 92 mass driver+plasma:
View attachment 244770
The tachyon lance+plasme loses with 29/92 ships remaining for the other composition, the reason seems to be the tachyon lance underperforming.
And at 22 of the tachyon+plasma vs 27 mass driver+plasma:
View attachment 244771
Here the tachyon+plasma wins with 4/22 ships remaining, and the tachyon lance contributes a lot more.
As you can see the tachyon lance performs much better at smaller fleet sizes, which could explain a part of the original results.
Even if you happend to use small battleship fleets the other problems with weapon and utility tech should remain. And a counter that barely beats the thing it is supposed to counter, and only at some fleet sizes, isn't great.