Asura.Professorhojo said:
»But upheaval isnt a cit hit ws.
No one said Upheaval was a crit WS, or that DEX would improve your Upheaval numbers. They're saying that having VIT merits is gimping your DoT as your are losing out on acc and potential crit rate during your TP phase. If you play any other DD you are gimping that as well.
^This. You'll gain the most DoT from STR and DEX merits. If you merit VIT instead of DEX, you'll push your Upheaval damage, but your overall DoT will drop. Also, the higher the level of the mob you're fighting, the lower your DoT will be without them, since your .dDEX level will be lower, and thus your overall accuracy and crit rate.
DEX merits help both your white damage and your WS damage, even when the WS you're using isn't modified by DEX, whereas VIT merits only help Upheaval. An ideal Upheaval build is going to have the accuracy from DEX merits.
Most of your DoT comes from your white damage anyway so don't be one of those guys who focuses on just boosting WS damage.