I would argue the real difficulty in ToT lies in the exact amount of raw abilities each boss has. My opinion is that it's much easier to teach a player to avoid a single deadly mechanic then say multiple small mechanics which end up being harder execute and coridnate and just as deadly in the longer term.
---------- Post added 2013-05-14 at 09:29 PM ----------
Kazrogal. Easiest boss in the universe. I spent lot's of afk on time on that boss.
Good to know I'm not the only one.
http://wow.joystiq.com/2013/05/10/th...ifficult-past/