A specific situation when Brutal Clan Boss rewards are better than Ultra-Nightmare Clan Boss rewards in RAID

In most cases the Ultra-Nightmare Clan Boss rewards are better than Brutal Clan Boss rewards in RAID Shadow Legends, but there is 1 situation where this flips around, which is the purpose of this blog post.

I immediately write the answer and explain below that:

When this specific situation happens:

This situation occurs when you have attacked the Ultra-Nightmare Clan Boss and gained more than the minimum requirement of 17,569,000 damage allowing you to get the Mythical Chest reward but you don't have enough damage to achieve the Transcendent Chest.

Specific Example

So for example:

You spent 2 keys to finish the NM Clan Boss and you spent your 3rd key and got 20 million damage on the UNM and now you have 1 key left (there are 4 keys possible in 1 day).

Next, most players would spend the 4th key again on the UNM to reach the next reward - Divine Chest or possibly Celestial Chest --> This is exactly when Brutal Clan Boss rewards are better than Ultra-Nightmare Clan Boss rewards.

Why is this the case?

This is because there is very little improvement from the Mythical Chest to the Divine Chest and even to the Celestial Chest. The big improvement of rewards occurs only on the Transcendent Chest.

Specific examples:

The chance that RAID players will get an Ancient Shard in all the 3 cases, from left to right respectively, is: 17.62%, 18.15% and 18.15% - basically exactly the same meaning that there is no reason to try to improve.

The chance that RAID players will get an Skill Book in all the 3 cases, from left to right respectively, is: 3.65%, 3.76%, 3.76% - again, pretty much the same meaning that there is no reason to try to improve.

Between the Mythical Chest and the Divine Chest there is no significant improvement, just slight increases which can easily be ignored.

Between those and the Celestial Chest the main improvement is that Celestial Chest no longer gives Magic Artifacts, which is indeed an improvement but it is nothing compared to a completely new chest, because from a new chest from Brutal you would get new chances for shards, books, and other items.

Conclusion

Therefore, if you find yourself in this specific situation you are much better of spending your 4th key on the Brutal Clan Boss and get a completely new chest than get tiny improvements in the UNM Clan Boss.