User blog comment:Kogath/Monster Hunter Generations Ultimate Discussion/@comment-24423627-20170220004239/@comment-27120688-20170220182904

^That is subjective. 3U is inherently easier than FU because they fixed tons of broken hitboxes. People say that 4U is the hardest its been because of the end game quests, apex, GQ140, etc. MHX is considered easier, but I think for the wrong reasons. A lot of people say its the styles and HA's, I say is the lack of a proper end game. Even with all the styles, tons of people find Hypers and VII-X deviants extremely hard. I'm sure XX is going to up 4U's difficulty in its own way.

But this is my personal viewpoint, I still find 4U to be the hardest, but I have no doubt that XX will top it in some form.