Guild Wars 2

After salvageing 12 items with black lion salvage kit, 3 rare items gave me ecto. this is a far cry from 80 %. This is unacceptable.

My question is very simple, maby I worded it wrong. Are others experienceing this? Or am I alone?

? I am refering to rewards for completing a map of wich there are maby 5 maps that offer Exotic rewards. The chance of getting 2 of the same identical item should be zero. This has nothing to do with drops from mobs.

Twice now I have cleared high level maps and recieved 2 identical exotic items. In my opinion there should be ZERO chance to recieve duplicate items from a map completion or any reward in game. Is anyone else experiencing my horrible luck ? This is insane and beyond frustrateing.