How Red Tearstone Ring Works in Dark Souls 1

Since the Dark Souls 1 came into sight of players , RTSR(Red Tearstone Ring) which can improve markedly players' damage has always become?the treasure of speedruners . But how it works? In the darksouls-wikidot ,the page of RTSR shows that it can increase the attack power by at least 50%, and common increase is about 66%.?

And the page of critical damage shows “Some?buffs,?such?as?Power?Within,?Red?Tearstone?Ring?or?the?Hornet?Ring,?multiply?damage?AFTER?the?damage?calculation,?which?significantly?increases?damage,?but?doesn’t?influence?the?ratio?of?damages?between?attacks?buffed?by?them.?Due?to?the?way?the damage?formula?works,?such?a?flat?damage?multiplier?is?always?weaker?than?an?equal?modifier?of?AR.”?

BUT it seems not to be accurate.
Because my PS4 is not available, I will use the data of the speedrun of Maarionete in Sept 15th 2022 which is the 1st place in All Bosses Speedrun in 59m47s.(https://youtu.be/U3nVNx-idzM) Well, let’s begin.
First of all, it’s significant to know what is the MV(Motion Values) of Bluetooth (Moveswap of dragon tooth and rapier ). The 2H dash attack MV of dragon tooth is 135 and the rapier is 130, let’s check it with the Boss Dark Sun Gwyndolin.
AR: Dragon Tooth+5 & 2H & 27Strength=590
MV:130 OR 135
ATK:767 OR 796.5
DEF:251
DMG:566.3 OR 594
Dash attack*2:1132.6 OR 1188

Compared with the picture we can see the MV is 135.And we will check how RTSR works with the Boss Sanctuary Guardian.
AR: Dragon Tooth+5 & 2H & 27Strength=590
MV:135
ATK:796.5
DEF:300
DMG:566.4
RTSR*1.5:566.4*1.5=849.6
Dash attack*2: 849.6*2=1699.2

It’s obvious that the damage we calculate can’t match what in picture, so why?If we multiply damage BEFORE the damage calculation, what will happen? Let’s try .
AR: Dragon Tooth+5 & 2H & 27Strength=590
MV:135
ATK:796.5
RTSR*1.5:796.5*1.5=1194.75
DEF:300
DMG:948
Dash attack*2: 948*2=1896

Perfect! It works! Let’s check it again with the Boss Manus.
AR: Dragon Tooth+5 & 2H & 27Strength=590
MV:135
ATK:796.5
RTSR*1.5:796.5*1.5=1194.75
DEF:324
DMG:928
Dash attack*2: 928*2=1856

Well done! Another check is based on Sif.
AR: Dragon Tooth+5 & 2H & 27Strength=590
MV:135
ATK:796.5
RTSR*1.5:796.5*1.5=1194.75
DEF:260
DMG:984
Dash attack*2: 984*2=1968

So what about the critical damage? I will check it with the Boss Gwyn.
First hit in critical damage:
AR: Dragon Tooth+5 & 2H & 34Strength=595
MV:60
ATK:357
RTSR*1.5:357*1.5=535.5
DEF:354
DMG:305
Hornet Ring *1.3: 305*1.3=397

Second hit in critical damage:
AR: Dragon Tooth+5 & 2H & 34Strength=595
MV:191
ATK:1136.45
RTSR*1.5:1136.45*1.5=1705.125
DEF:354
DMG:1421
Hornet Ring *1.3: 1421*1.3=1847

Compared with the picture we can see it is absolutely accurate. The RTSR?increase damage BEFORE the damage calculation.
Darksouls-wikidot is always being my favorite soulswiki but it seems to need a little data refresh.
Pictures?cr:
https://www.yxbao.com/xw/93198.html
https://baike.baidu.com/item/%E9%BB%91%E6%9A%97%E4%B9%8B%E9%AD%82/3159672
http://darksouls.wikidot.com
https://youtu.be/U3nVNx-idzM