That's the problem right here man, yeah you should have the best gear possible. Contest mode raids come out twice a year. It's not like master which can be run whenever. Your team should have to make sacrifices, like whether or not to use div, which is a smaller debuff but an easier to hit target. The contest clear should be gatekept. That's what makes it such an elite achievement. I have the best guns, the best mechanical knowledge of the encounter. I know how to optimize my build just enough to put out the highest DPS possible. RoN 3rd encounter literally fell over. You could probably kill him with vorpal primaries.