Water weapons everytime
Kamihime Project : 3341542
More recent version of the damage formula puts crits in their own separate multiplier. Berserk/stun punishers/rage punishers are still in that miscellaneous 'other buff correction' multiplier though.
Stinger's for people focusing less on the long term average and more on gambling for all or nothing in small sample sizes. Like in situations where you know you're not quite strong enough for steady play to win, but creating variance can give you a shot.
On a side note, the DMM wiki also pointed out that Stinger(S), Stinger(M) and Stinger(L) each have separate rolls. Does anyone know is that 0.2+0.2+0.2 = 60% bonus if that happens, or if it's 1.2*1.2*1.2 = 72.8% bonus?
The addition is more likely, but consistency has never been a strong suit of the devs.
Source: JP wiki (notice that weapon's skill page for Stinger still has it under berserk & crit frame).
For every Stinger weapon roll will be made.攻撃する毎に武器毎で発動判定を行
With 3 Stingers equipped, if every roll is a success +60% damage will be applied.3本装備していて、全部発動すると+60% になる、といった具合。
Ah shit, I probably should've checked that myself, huh. I could've sworn a couple of months ago it just said about them rolling differently, but even going backwards it seems that's always been there... sorry.