T9 4st bonus questions

[xarr]

EI page gives several cool specs in 3.2.2 among which 2hander 16/0/55 and dw 3/13/55 seem the best options. However, which spec scales better with t9 bonus sets ?
Does Black Ice or Dark conviction/Bladed armor scale better with frost fever/blood plague?
Why does frost fever crit more than blood plague without razorice buff?
And which would you choose: blood/uh or frost/uh in pvp with four setbonus?

[Deathy]

afaik blood plague crits more the ff cause the theory is it goes of your melee crit chance since plague strike is melee and icy touch is a spell.
about scaling id say black ice is better at scaling BUT is it better then 5% crit and w/e ap im not sure

[Lilbunnyfufu]

afaik blood plague crits more the ff cause the theory is it goes of your melee crit chance since plague strike is melee and icy touch is a spell.
about scaling id say black ice is better at scaling BUT is it better then 5% crit and w/e ap im not sure

Its actually been the opposite in practice. Frost Fever seems to have a crit rate roughly equal to my melee crit rate whereas blood plague is somehow completely random, being roughly around 17%, with my melee crit around 28% and spell crit around 22%. It seems rather non-intuitive and I tried playing with a mage last night to see if we could figure out possible reasons behind this but were stumped, and so if anyone has any good reasoning behind this, I would love to hear it.

Also, my sample size wasn't overly large, probably about 350 disease ticks on a test dummy, but I would think that would be within a margin of error of 5% at least of my spell crit, so blood plague seems like it might just like to crit when it feels like it?