Sorry, but no tank should pure vit stack right side.

[Pooky_Pasha]

snip

That research is over two years old. It is well out of date and not correct. This is better and more recent: https://www.reddit.com/r/ffxiv/comme...modifier_info/

As for the 27%, it's pretty simple. As far as I know, everything in this game is linear. That means, STR, damage, and enmity scale at the exact same rate. If we increase STR by 27%, damage and enmity are also increased by 27% (all three are connected).

So...I have 950 total STR outside of party. This includes full STR accessories and 35 bonus points into STR. My accessories total 203 STR.
950-203=747 <----This would be my STR if I used all VIT accessories.
(203/747)x100%=27.17% So by going full STR accessories, I gain 27.17% damage and enmity over going full VIT accessories.

Which only means you will need it if you need to use flash frequently.
I never was in a position where I needed more then flash as every 4th skill (and this only to gain TP). And yep I am full VIT.

Actually, it means you will not need to flash as often since flash will "hit harder." 5 Flashes (full VIT) = 3.93 Flashes (full STR) (so 4 Flashes + a little extra)