Well... MMOs have this odd little thing that no other game genre does (to my knowledge). Their raid mechanics are often completely counterintuitive. Like you get a mark, or a tether, or who knows -- if you haven't watched/read a guide, you have no idea what to do with it and whatever you try is most likely wrong.

That said, once you know the strategy, is IS all execution. Lucrezia, Blue gartr, etc get world firsts not only because they can puzzle out the mechanics, but also because they can execute with a degree of perfection not attainable even by those clearing a few weeks later.

And all of that said, I'd welcome more fights that resemble MH and such.