So, after looking over the sheet a few times.
It seems the spreadsheet, under "Buffed DPS" I can't find where t6 4pc bonus is modeled.
It does appear under the "Buffed Threat", in cell B19
[top]H4*IF(Gear!V7,1.05,1)
Also under "Buffed DPS", the offhand factor is indeed.
50%+(5*Talents_Buffs!E20/100/2) Cell B9
Displaying the correct value of 62.5%
But under the "Buffed Threat", the offhand factor is
=0.5+Talents_Buffs!E20/100 Cell S5
Displaying an incorrect value of 55%
Are these meant to be like this? Or is the sheet missing things?
Also, what would the proc on Warglaives be modeled as? How much constant haste?