Shuriken S vs R

So I'm having a hard time understanding the comparison between S and R type special upgrades for Shuriken in regards to at what point it's better to R type one than to S Type it.

I understand that the S Type is the 2H bonus and the R Type is the 1H bonus, but could someone help me with the math to figure out the break even point for level 5 on this stuff? Also, what damage output are we talking about on normal hits vs critical hits at each level?

If it helps my damage with no other equipment is 303-475.

I apologize if it's a lot of math, but this will really help people out if anyone can chart it up for us.

Thank you in advance for any help that can be provided.

A shortcut should be to compare 14.5x(R-type bonus) to 3x(S-type bonus applied to your max damage with upgraded shuriken). (this is counting 10 hits with 30% critical hit rate)

The long, sure way would be to calculate min and max damage for 10 hits total, 3 of which are critical (7 normal, 3 crit) for each of the 2h S-type upgrades and the 1h R-type upgrades. Basically, if it's upgraded already, just add the R-type damage to yours with the shuriken. The S-type gives an added bonus to the critical damage (at rank 1 that's 250% total damage normally, at 2h s5 that's a total of 300%)

That's essentially the simplest way to check which is better for you. Your damage is high enough that the extra critical damage from the S-Type should overpower the flat damage bonus from R-Type. I recommend Excel or OpenOffice.org Calc to keep things organized.

I'm always a bit iffy on the average damage since some mobs have rather high prot, reducing the crit rate, but at the same time ALL of the Ninja skills ignore prot for crit calculation. That being said I have an R5 Lich Crocodile Anju's Shuriken now.

According to my math you need 518 or greater max attack for R5 shurikens to be better than S5 shurikens. This goes for anything else that uses two hand values for S upgrade but 1 hand value for R upgrades. If you want the turning point for other special upgrade levels let me know.

EDIT: In reality the turning point is actually slightly lower due to balance not working the way most people thought it did but at this point the difference should be neglible.