I have seen others say the same thing but a full purple Brittle Blade Sin set actually has 0.8 DPS less than than Tamarin and only 19 Crit Rating and 13 Crit Damage rating more than Tamarin (it also has 190 offhand rating).
These are negligible differences and of course Tamarin has a lot more armor (4000) and hitpoints (1000) and a slight edge on hit rating. So why is Brittle Blade sin armor even considered as an option?