well, that was kind of easy to figure out as far as the six-hit route goes, though tbh doesn't beat the five-hit imo, since at best you're gaining 14% more zanshin (5/5 merits, katana strap 5%, unkai mimikazari 1% and let's
assume ace's mufflers are 3%) over what the five-hit already uses (unkai domaru +2 and unkai sugemino)
still though, crazy when you think about it, since at level eighty (and beyond) samurai's base zanshin rate would (
or should) be 55% (10% every twenty levels, starting at lv20), and i'd imagine it's a safe bet unkai domaru +2's zanshin is at least 3% as well, since it's kind of a pathetic piece past the store tp on it otherwise (sup haub+1 with no fSTR and dDEX but 7 more atk/acc)
assuming five store tp from store tp v,
no store tp merits included (in favor of 5/5 zanshin merits)
tp - 17.2% return
masabro katanastrap empty thewbomblet
zelustiara ganesha'smala unkaimimikazari brutalearring
unkaidomaru+2 ace'smufflers mars'sring rajasring
unkaisugemino bullwhipbelt unkaihaidate+2 ace'sleggings
ws - 15.0% return (101.0% total)
masabro katanastrap empty thewbomblet
varangianhelm justicetorque vulcan'spearl brutalearring
fazheluoradiantmail heafocmitts pyrosoulring rajasring
unkaisugemino beirbelt+1 hachiryuhaidate unkaisune-ate+2
55% base (trait effect x4, lv20/lv40/lv60/lv80)
5/5 merits (5%)
katana strap (5%, needs testing though i'm almost certain)
unkai mimikazari (1%, safe to assume since all the jse earrings are very weak, i.e iga mimikazari 1% dual wield)
unkai domaru +2 (3%?)
ace's mufflers (3%, being generous probably for hands that can be equipped by jobs other than samurai)
unkai sugemino (3%, otherwise if it's less than that after verification, atheling mantle ahoy)
in short, six-hit route's sporting 75% zanshin at maximum probably, while 63% at the least (take out katana strap and unkai sugemino in favor of pole grip and atheling mantle, mimikazari/domaru/mufflers each 1%); five-hit's rolling 61% maximum, 56% minimum
both sides will possess the same amount of double attack, 2% in six-hit's favor if katana strap is garbage; if store tp v is in fact five points, the six-hit'll have 2% haste over the five-hit, but i do believe it'll be irrelevant, since the five-hit looks far superior in the long run after comparing the two
only 4/5 ikishoten's required for the six-hit (enabling a blade bash or shikikoyo merit), while the five-hit i believe required all five merits for it to shave a hit off toward 100% tp
ps: don't ever contemplate using nanatsusayanotachi ok? ok
edit: the five-hit ikoshoten doesn't require 5/5, 4/5 works for it