Thanks for the answer, really genius.
Since 3 and 50 are purely arbitrary, I think this formula can be refined.
For now, I will verify another case:
Based on AACalc to be 50-50%, a A3D3 should cost 20 compared to a A4D4 cost 23.1
If we divide by 4, this means a A3D3C5 would be even with a C5.775 A4 D4 unit.
Or if we take Cruiser A3 D3 C12 as basis, it is 3/5 of 20.
A A4 D4 should cost 23.1*0.6= 13.86 almost 14.
Now we can compare with Vann formula:
4/(3*14^2)*50= 0.340
It is very near .347 of Cruiser.
So, this work but I only consider 1 hit value unit.
In Classic time, there was no 2 hits unit.
At first glance, do you think we can introduce this factor in the equation?
I’m also pretty sure that taking Tank A3 D3 C6 as reference, it is easy to modify the formula to get 3 instead of 2.
What do you think?
Here is a simplify first draft of what I would call Larrymarx formula, in your honor:
*Power/(cost^2)36
*Tank offense & defense factor: 3/(6^2)36= 3
So **Mech Infantry A1 D2 M2 C4 would get as offense factor:
(1/4^2)*36 = 2.25
Defense factor:
(2/4^2)36= 4.50*
So, a C6 Tank strength A/D value is 3/3 but MI is 2.25/4.5
That show how useful it is for defense compared to Tank.
When Tank was 5 IPCs, (3/5^2)*36= 4.32/4.32
Almost same than MI defense factor.
So C6 Tank is 69.4% of a C5 Tank, so 30.6% weaker.
To find the target number for 2 hits Battleships:
41 Cruiser A3 D3 M2, 1 hit vs 22 Battleship A4 D4, 2 hits are 50%-50%
So, a 11 IPCs Cruiser worth a 20.5 IPCs Battleship.
Such Cruiser would get as offense factor:
363 / (11^2) = 0.8926 or 108/121
BB 364 / (20.5^2) = 0.34265 or 144 / 420.25, if it was 1 hit unit.
.8926/0.34265 = 2.60 for 2 hits
Here is the complete Baron-Larrymarx formula:
36 Power/(cost^2) {1+[(nb hit -1)/11.618034] }= offense or defense factor*
36* 4 / (20.5^2) {1 + (2-1)/11.618034} = 0.8971
Now if I try for BB A4 D4 C20, 2 hits:
36* 4 / (20^2) * 2.618034 = 0.9425 offense and defense factor.
A Cruiser A3 D3 C12, 1 hit would get:
36*3 / (12^2) = 108/144 or 0.75 offense and defense factor.
A G40 Carrier A0 D2 C16, 2 hits factor:
36*2/ (16^2) * 2.618034 = 0.736 defense factor
Does it work?
It seems because AACalc put them nose to nose with a slight advantage for Cruiser:
http://calc.axisandallies.org/?mustland=0&abortratio=0&saveunits=0&strafeunits=0&aInf=&aArt=&aArm=&aFig=&aBom=&aTra=&aSub=&aDes=&aCru=8&aCar=&aBat=&adBat=&dInf=&dArt=&dArm=&dFig=&dBom=&dTra=6&dSub=&dDes=&dCru=&dCar=6&dBat=&ddBat=&ool_att=Bat-Inf-Art-AArt-Arm-Sub-SSub-Des-Fig-JFig-Cru-Bom-HBom-Car-dBat-Tra&ool_def=Tra-Bat-Inf-Art-AArt-Arm-Bom-HBom-Sub-SSub-Des-Car-Cru-Fig-JFig-dBat&battle=Run&rounds=&reps=10000&luck=pure&ruleset=AA1942&territory=&round=1&pbem=