Records of Eminence!

[Afania]

In Delve most mobs have 1 or 2 moves that will kill you, or slow you down, and they have exploitable weaknesses on top of the ability to be stuck with Enfeebling Magic quite easily. Legion had monsters where most moves would kill you, they had no real weaknesses unless you count stunning and Perfect Defense as 'weaknesses', and Enfeebling was not really an option from what I know for a long time. For not being harder than Delve, just off the basics, it seems to me that you're wrong in that claim. I mean if you go so barebones in your description of the event as to say its just a stun zerg, then yes, they are, but there are more things to it than that.

Exploitable weakness doesn't really make the game easier, more like it's required to use if you want to kill it in short time.

Not every legion NM has 1 shotting move, besides maybe death prophet. Also because ppl don't use MNK/mantra rotation strat at that time, and less DD have proper HP/DT- set. So DDs were more squishy.

Legion also doesn't need to deal with mayhem from shark(PUG still wipe to this), ppl fuck up on mata(before skill update fuck up on mata=no time to win for most groups), and so on.

I was like 1/4 or 5 to get my first Mul win. My LS was around that number for morimar/foret 6NM delve before skill update and never beat Ceizak until combat skill added to the weapon. Numbers don't lie, if legion was so much harder than delve pre-update it'd be 1/10 for mul and 1/2 for delve.

Delve is only easier now because of skill update and gears getting stronger after each update, on top of everyone and their mother spammed it to death and get very used to it. It wasn't easy at all back in 2013/06 and 07.