Quote Originally Posted by RiceisNice View Post
You need to do X amount of damage to get credit. When there's more people in the area, the boss dies faster and less time to DPS. If you have less people, the dps requirement becomes much tighter when you consider the shorter kill-window.
The other night in Diadem, with the same groups present for both NMs, my warrior, my friend's black mage and our ninja were the only 3 people who did enough burst damage to get a threat bar on a Star Rank. We got a gold chest. Immediately after, another S rank was popped, and 6/8 of us had threat bars visible... but no Gold Chest.

There's something else at work - every indicator the game provided suggests that we did better on the second NM than the first, but the rewards don't line up with that. These are good players - no trouble with Hand of Pain, historically had no problems pushing phases in other content - but they're still not "good enough" to reliably hit the threshold?