Has anyone else looked at these numbers? I gave it a shot just out of curiosity, but I’m not any kind of mathematical person, haven’t done much more than calculate a tip since high school. So check my thinking:
If you have 1 defense die, your chances of the evade being useful are 1-P(evade), which gets you 5/8 or 63%.
For a 2 die ship, the evade is only NOT useful if you roll two natties, so 3/8 * 3/8. That means the evade is useful 86% of the time (or, in other words, it’ll block .86 of a hit).
For 3 dice, that goes up to 95%; for 4 dice, you’re at 98%; and past that, you’re pretty well guaranteed to block one hit out of the evade.
Now compare that to a defensive focus.
For 1 die, you have a 2/8 chance to roll a focus. So 25% of a block from it.
For 2 dice, your chances of getting at least one evade out of the focus would be 1-P(evade or blank & evade or blank), right? That gets you a 44% chance of at least one block, but you also might get two evades out of the one focus (which would be...what, 1/16? 6.25%). So you’ve got (.44-.0625)*1 + .0625*2 evades from the focus, which works out to .5025.
For 3 dice, it’s .578 to roll 1+ foci. Getting 2+ foci would mean 1/4 & (1/4 or 1/4). So... .25*.5625 = .141, and then the probability of rolling three foci is .25*.25*.25 = .0156.
So P(1 focus) = .578 - (.141+.0156) = .421
P(2 foci) = .141 - .0156 = .1254
P(3 foci) = .0156
So you expect to get .876 evades from that focus token.
And then four dice is just way too complicated for me.
TL;DR my hack-and-slash math gets me the following numbers:
EVADE TOKEN
1 agi: 0.63 of a block
2 agi: 0.86 of a block
3 agi: .95 of a block
FOCUS TOKEN
1 agi: 0.25 of a block
2 agi: 0.5025 of a block
3 agi: 0.876 of a block
The real trick is that that’s per shot. If you’re a 3-die ship getting shot two or three times, I imagine a focus is just better, since it can get you multiple evades, but I don’t know how to do those numbers. Anyone else able to corroborate or deny those numbers?