you're complaining because a guy takes stuff from a corpse he killed by himself, and can protect the corpse from other people who could loot from it? sure, your his groupmate, but if you were the guy who dies, do you want some random lowbie to be easily able to take from your corpse?

just suck it up. even if quas is a douche/tool/level-sitter/person-who-doesnt-follow-the-tablet-villager, that doesnt meant it wasnt his kill, and therefore, his gear.