Definition of difficult:
dif·fi·cult Audio pronunciation of "difficult" ( P ) Pronunciation Key (df-klt, -klt)
adj.

1. Hard to do or accomplish; demanding considerable effort or skill; arduous: “To entertain is far more difficult than to enlighten” (Anthony Burgess). See Synonyms at hard.
2. Hard to endure; trying: fell upon difficult times.
3. Hard to comprehend or solve: a difficult puzzle.
4. Hard to please, satisfy, or manage: a difficult child.
5. Hard to persuade or convince; stubborn.
----------------------
YOu are going by definition 1, I am going by definition 2. Therein lies the argument.
BTW, the example in definition 1, very apt, no?
-akhilesh