Heres's the crux:

A) I run out of AoE, client tells server "he's out", server acknowledges within 50 ms (it's been 250ms since last tick) so I'm good. 200 ms later the explosion goes off, I live.
B) I run out of Aoe, client tells server "he's out", server just ticked 300 ms, 50ms ago, won't acknowledge move for 250 ms. 200 ms later explosion goes off, I die.

So even with a 10ms ping, you can still get hit all depending on where you fall in the update window. Knowing stuff (ala people's defense for Titan) does not excuse the fact you can die even if you move with a superb ping all because you fall slightly out of a longer-than-human response time.