PapaHoth wrote:Which is better in terms of damage potential, termie lightning strike or board actions with marine favor and maxed out ratings?
Bear in mind that Ratings are purely defensive: they don't help your boarding actions.
The typical Troop Value of a Space Marine ship is 70; potentially it goes up to +9 from Space Marine crew, +5 from Chapter Relic, and maybe another +6 from Chapter Master. That means potentially up to 90 Troop Value, albeit only ever on one ship. Even without Chapter Master, it means high level Space Marine ships have potentially 84 Troop Value -- which is impressive indeed.
The main point here is that there is a larger variability in Space Marine Troop Value than any other faction, I believe, so you really need to check what your enemy's ships are like when deciding whether to do a Lightning Strike or a Boarding Action.
Then on your side, as you probably know, Terminator Lightning Strike was changed from being two assault dice, to being a single assault dice at -10 enemy Troop Value. You can still upgrade it with an extra Teleportarium, however, rolling two dice at -10 Troop Value. That's actually not so bad. Your Boarding Actions will be rolling three dice for a light cruiser, four dice for a cruiser/battlecruiser, or five dice for a battleship.
Okay, so let's do a median example: one cruiser vs. one cruiser. One scenario at TV 70, the other at TV84.Scenario 1: TV 70Terminator Lightning Strike:
You're rolling one dice vs TV 60, so you have a 40% chance of inflicting a hit (which is then split between fire/hull breach or temporary crit). Or, to give it a weighting, an average of 0.4 hits per action.Terminator Lightning Strike with Extra Teleportarium:
You're rolling two dice vs. TV 60, so you have a 16% chance of inflicting two hits and a 48% chance of inflicting one hit. That's about 0.8 hits per action.Boarding Action:
with 4 dice as a cruiser with the Space Marine Favour. However, you're rolling against an effective TV of 82 -- the base 70 +12 from Turrets against a boarding action. That means each individual dice only has an 18% chance of success.
That means you have: 0.105% chance of scoring 4 hits, 1.913% chance of scoring 3 hits, 13.071% chance of scoring 2 hits, 39.698% of scoring 1 hits. That actually weighs to an average of 0.72 crits, which is pretty decent -- although hidden behind that number is the fact that you might just get wildly lucky and get that one-in-a-thousand quadruple critical. Also, those crits are split between fire/hull breach, temporary criticials and permanent crits.
Anyway, in this scenario, it's clear: unless you took the Extra Teleportarium, Lightning Strike is decidedly inferior to Boarding Actions.Scenario 2: TV 84, i.e. Chapter Relic and full Space MarinesTerminator Lightning Strike:
You're rolling one dice vs TV 74, so you have a 26% chance of inflicting a hit (which is then split between fire/hull breach or temporary crit). Or, 0.26 hits per action.Terminator Lightning Strike with Extra Teleportarium:
You're rolling two dice vs. TV 74, so you have a 6.76% chance of inflicting two hits and a 38.48% chance of inflicting one hit. Still, 0.52 hits per action.Boarding Action:
again with 4 dice. However, in this scenario, the effective TV of the cruiser is an incredible 96
thanks to its Turrets, meaning each dice has a mere 4%
chance of success.
That means you have: a negligible chance of getting 4 crits (seriously, it's like 1 chance in 390,625); 0.021% of getting 3 hits; 0.646% of getting 2 hits; and 8.822% of getting 1 hit. Even with weighting taken into account, the average crit per action is merely 0.102 hits or so.
So in this scenario you're much better off using a Lightning Strike even if you don't have the Extra Teleportarium. Heck, in this scenario you'd be better off using Lightning Strike, period. High TV ships with lots of Turrets get an abominably high effective TV rating against Boarding Actions.