EQ raiding: You're at bat in game 7 of the world series, it's the bottom of the 9th with three runners on down by 3. (One meaningful attempt, that took a lot of effort to get to).
FFXIV raiding: Batting practice, with a pitching machine that shoots in a choreographed series of different directions with infinte balls. (Learn the sequence so you can stand in the right place to swing, it's okay of you screw up - you can just try again!).

Taken to extreme proportions:

Kerafyrm, The Sleeper (EverQuest)
Probably the hardest dragon boss of all time, as it had around 250 million health point, was invulnerable to nearly all spells and had the ability to use death touch (kill a player with one touch).With the average 6999 damage per swing, The Sleeper killed everything that came on its way. Whole fight took 3 hours to finish and was only possible thanks to quick resurrections. Interesting to know, is that with each death, EverQuest players lost experience points and de-leveled several times during the fight. Kerafyrm could only be awakened once on every server and he never respawned again.