Lol. You guys don't realize that "support" tree benefitted Mordekaiser top a lot more than offense.
9-0-21. Spellvamp and that extra CDR because morde does not build CDR aside from blue buff and blue elixir and leveling faster.
you also don't realize that Katarina can go tank(defense tree), and carry low Elo's as a very strong bruiser.
But overall, you are correct. Morde is the only offense champ i go utility on 100%, and there are only a few casters I go defense on: Katarina, Ryze, Orianna.
I've seen Ego ignaxio go utility on kennen, but i tried it and it doesn't work as well as going offense.