Lol. Any current tier raid normal mode boss completely destroys an EQ planar boss in terms of difficulty. Bosses have becoming harder and harder through the years albeit the time sinks to get to thoses bosses (what you would call difficulty i guess, something like farming hours for consumables, for access to the boss etc. It's NOT fun, get over it) have shrinked. While thoses bosses are much harder, community matured and the general skill level is much higher in the MMO community then it was ten years ago. It's called experience.
As someone said, when you've played different aspects of MMOs throughout years, you get the feel of it. You can give me any class, any spec, any role, in a matter of minutes i can play it very well, not to the perfection of course, but sufficently to do well in any standart pve gameplay : i.e. maybe not WoW hardmodes which is the most challenging existing pve content. it's the same for lots of people out there.
Finally, i will just say its funny to call names on WoW players bragging about things you think are useless (HM's achievs) and to praise the difficulty of EQ pve and the skills of its players (what a joke) in the same post