I haven't played in a while but as far as i can remember even full PVE rogues weren't able to one shot in single GCD players above 1200 ressi not even clothies. Combat log shows only one hit around 5k but the rest is missing. it happened 3 times already... I remember ELE once oneshotted me like that on my healer in arena, he couldn't kill me for long time probably became mad and pufff bursted me in 1 GCD. Whats up with that?
Nah man, i play on this server since 2012. I know what combat rogue is. This one was subtlety. It sounded like 2-3 ambushes but health didnt go partialy but suddenly from 100% to 0%. I am telling you it was abnormal + no show on combat log...
It is undeniable truth that lot of strange inexplicable things are happening in sever PvP. I remember once ELE bursted me so fast in a blink of an eye. At first he was struggling against me (healer) and at one point he got mad or bored and literally one shoteted me. Now i know i know ele has insane burst... Blah blah but i am telling you this was off the charts and he wasn't pve.
Sometimes you just get insanely lucky high crits as ele. I recently did a 10k lava burst 5k chain lightning combo in a bg. Utterly deleted the health bar. He probably had low gear tho.