Stuns are technically not supposed to land on anything above level 55. However on live, levels for stuns and such did not matter in PvP. This got ninja-nerfed in ~2008 from the expansion that allowed level 80, and effected things such as Ancient Mez spell/song, but there was only like 3 bards on zek and 0 chanters so I never got a definitive answer from Sony. The code that checks for stuns needs to see if it is two PC's attacking and allow it.
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