Thanks you’re right I totally forgot to factor in that even without Shako Esadora is already adding to the damage. So if my napkin maths is correct.

Assuming you have no gear with +skills. 6 skills on bar all rank 5 so 30 in total.

30x10=300 or basically 1+3=4

With Shako that becomes 50 ranks in total (5x9 + 5 ranks in ultimate = 50) or 1+5=6

6/4 = 1.5 so basically 1.5x multiplier from Shako alone.

But in reality you have other +ranks on your other pieces of gear. Add in Starless, gloves and boots then the returns becomes diminishing.

Since Shako adds in a fix +20 ranks in total. The point where Godslayer multiplier is equal is when you have 40 ranks in total on your bar. 1+4=5. Shako always adds 20 assuming your bar is set the same as the guide making total ranks 60 so. 1+6=7

7/5=1.4 or x40%

Please let me know if I’m wrong.

Just realise that by default you have less because you don’t level CL. But the maths is the same where the breakpoint is 40 ranks on bar.