They're all within a couple of pps with the math I've done. Sharp wins with extra FS proc. My best Susan run is with sharp opener, if that matters anything to you.
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Tha's what 0.63 in the formula stands for (base 0.4 + 0.23 from crit rating).
Actual calculation is
f(crit)=(crit_chance*crit_multiplier+(1-crit_chance)*noncrit_multiplier)
damage increase is f(crit)-f(base_crit).
And increase over base value is (given noncrit_multiplier is just 1) delta_multiplier = crit_chance*crit_multiplier+(1-crit_chance) - 1 = crit_chance*(crit_multiplier-1).
Absense of explicitly coded diminishing returns makes calculations quite simple.
What MIGHT change the outcome is if i got base values wrong, i.e. if base crit multiplier is 1.5 then breakpoint indeed happens noticeably earlier.
How do you deal with foul in AF with sharpcast opener?
3 things I usually do when faced with that scenario:
1. Force the Foul in AF and use swiftcast on B3 to keep enochian.
2. Sacrifice an F4 for Foul to keep enochian.
3. Use sharpcast on F1 for an F3P at the end of AF thus allowing you to F3P>Foul>B3.
Which of those 3 I would use depends on my CDs and Foul respawn timer. I do have to ask though, are you getting better DPS results with the sharpcast opener versus the b3 one? Top DPS BLMs are dishing out 4000+ on Susano using B3 opener. It's functionally smoother in the long run too given the Foul respawn timing being in UI.
I haven't tested sharpcast opener extensively so I can't compare between the two openers but Hearts opener is just really smooth in terms of foul placement. The things you mentioned are not really appealing to me as sharp/switft/triple should be really used, IMO, as utilities for movement
Swift/Sharp does indeed provide great utility against necessary movement but, after sufficient experience in a fight, proper positioning will lead you to being able to dodge mechanics without sacrificing a Swift/Sharp for movement. The moment you succeed in using that Swift/Sharp for straight-up damage instead of keeping it on off-cooldown is a very satisfying feeling. BLM is one of those classes that is heavily rewarded for those tiny tweaks in positioning and I highly advise you take advantage of that.
@GospelVhae
How much spellspeed do you have?
edit/addtl:
I too encountered difficulty adjusting to Stormblood BLM. The current levels of spellspeed (1400++) just feels sluggish when compared to late-HW SpS thanks to the level scaling. There's also the task of figuring out when to cast your procs, cooldowns, and more importantly, Foul.
I've read somewhere on reddit that: F4>Zero MP>Transpose>B4 is better than F4>2400 MP>B3
Can anyone validate this?