Trial and Error Based Gameplay

[Koh]

-le snip-

True, the severity is all according to the player's interest.  

Another thing about it would be if it's really skill based at all, or if it's just a fluffed up version of Quick Time Events.  Knowing a boss can do one of several tactics at any time, and using visual cues to prepare a dodge or counter makes use of the player's skill.  Fighting a boss repeatedly to memorize and regurgitate the same order of attacks, such that you know exactly where and when to stand with your one-hit wonder character is no different than a Quick Time Event, where you just have to press a single button at the proper moment, or else, you go back and do it again.  i.e.  The Impossible Game, that's really just easy as heck once you've memorized the level design, but gives the illusion of difficulty otherwise, 'cause you die in one shot and go all the way back.

Speaking of lolsy Quick Time Events: https://www.youtube.com/watch?v=5gWz46t50rU