Veterans sporting characters with 50 past lives probably will not feel this much, but as someone with only a second life toon and having played Heroic Epic around the areas I feel safe saying that the Heroic Epic quests in Eveningstar are disproportionately harder compared to Heroic Hard as opposed to other areas. Sure, HE is supposed to be a gain in difficulty, and will have more enemies among other things, but in ES it goes beyond. How easy or hard?
Take the story arcs such as the Druid's Deep where the Heroic level is 17, and the Epic level is 23. I have tested this on many quests in Eveningstar with such differences and it is undeniable that Heroic Epic is much harder than Epic Hard! That makes no sense. I have not observed such an extreme in other areas so must conclude it is particular to Eveningstar.
I realize this is not a 'bug' per se, but posting this in Suggestions seems less appropriate.