you do realize that the difference in damage is slightly over 100 aka 200 crit damage minus armor % right?
and if you got "owned by rank 9" which your rogue might not even have learned that you would die 0.1 sec after from a white hit to a rank 8 right?
and you do realize this isn't 5 mins of work for a 100 damage nuke on half rogue population in pve and all the pvpers?
the reason you are getting "one shot" by rogues is because most caster/healer gear is crap in current content while rogues have 90% of their bis preraid available at launch...