Ulrik wrote:
No, I'm not. As others have pointed out, setting up for a decisive triple retain in turn 2 will often be an all-or-nothing tactic. So the chance of failure will be extremely important...
The chance of failure is important in absolute terms. However, your comparisons of failure rates were ratios of ratios, causing distortion.
Starting with a very small number means a small change looks huge when expressed as a ratio, even though it means little in practical terms. If your chance of losing goes from .001% to .003%, your chance of loss has tripled, but who cares? It only changes the outcome 1 in 50,000 times. Statistically, that will never make a difference for most people. It doesn't matter if it's 3x the chance of loss or 100x the chance of loss.
The difference between 97% win and 91% win is +200% increase in the number of losses, but that's a poor comparison in terms of in-game effectiveness. The important thing is how often it changes outcome overall. The change in outcome only occurs 6% of the time, or roughly 1 in 16 strategy rolls.
Obviously, one extra initiative win, on a random turn, over 4-5 games is a very small boost. Calling it "+200% chance of loss" is technically correct, but gives a distorted view of how much difference the change makes in play.
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Kyrt wrote:
This is because the tactic is all-or-nothing. It usually determines the outcome of the game, with a failed activation often meaning you lose. With such a big downside, you will only ever use this tactic if the risk of failing is very small...
Add a blast marker (or only use one BG formation):
The chance of Biel Tan failing a 1+, 2+, 3+ if they have a re-roll is 19.44%
The chance of Biel Tan failing a 1+, 2+, 3+ if they don't have a re-roll is 44.44%
The chance of Ulthwe failing a 1+, 1+, 2+ if they have a re-roll is 2.77%
The chance of Ulthwe failing a 1+, 1+, 2+ if they don't have a re-roll is 16.66%
I believe it is similar odds for 2+,2+,2+ but have only checked one calculation as I don't have all day
These are good to know, but I don't think we can strictly rely on these calculations when considering actual game play.
The Eldar have the option to abort at any point in this activation chain. Even if a 3-activation chance is the same, 3+/2+/1+ is "safer" strategically than 1+/2+/3+. If that first activation fails, then the Eldar player knows the attempt failed and can react accordingly. Fizzling at the outset is far less dangerous in terms of being overextended or otherwise vulnerable. 3+/2+/1+ is definitely preferable to 1+/2+/3+ strategically, even though the stats on succeeding on all 3 are identical.
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"All Or Nothing" Double RetainI'm having a hard time with this concept.
In my experience, a lot of times the triple action plan doesn't consist entirely of interacting pieces. Plenty of times I've seen a double assault on one flank, followed by ranged fire on the other or some other non-interacting arrangement. Obviously, that third activation would be advantageous or the Eldar player wouldn't try it, but there's no special vulnerability based on an elaborate "do or die" setup.
As far as the rolling assault, as I note above, Eldar players aim for the weak activations first so they know ASAP if the plan will progress. They adjust accordingly, not just at the beginning but as their turn progresses. First activation fails? Abort and adjust to a better defensive position. Second activation had to use the SC reroll and the only available third activation is 3+? You haven't moved yet. Change the positioning on the second so the formation can withdraw conservatively and don't try the third. It's less than ideal, but hardly unrecoverable.
Obviously, Ulthwe have a better chance to succeed with rolling assault, triple-activation plan and can still adjust to failure or plan non-critical third activations as well. None of this is to say they can't. Nor is it to say that setting up a near-auto is not overpowered.
I'm just struggling with the perception that triple activation is all about Initiative failure and that the consequences are utterly dire. A failed Initiative or lost SR roll will cause some vulnerability, but it's usually no worse than for any other army made of small, elite formations. I rarely see this "all or nothing" situation develop.