You're not doing anything different no... but there also aren't 75 other players in your 'il newbie area. It's only natural that chance can favour you and let you pick up many more Poison Sacs/Weapons/Armour Drops etc with less people in the yard.
Less People, more mobs up at any given time. More mobs up, better chance that mobs up can be Wasps, Skeletons, Gnolls etc that are free to kill.
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