Quote Originally Posted by Antanias View Post
Extreme trials
Savage raids
Ultimate trials
I'd say these are pretty set in stone as the last three in that order as far as the community at large appears to grade them on these forums and on YouTube, so far as I can see. However, I would think that it's not as clear-cut for Alliance Raid and Normal Raid.

Those seem to be on a somewhat similar "difficulty" in design, but due to high dependency on teamwork across three parties, alliance raids are pretty "hit or miss". There are ones that will be easier than normal raid, there are those that will be harder than normal raid ("Wiping City" speaks for itself). Then of course add the natural variable of players on top of that.