Why did I fall for the bait.
"Healer Guide" should have run at "Class Comparison".

This is a guide. It does not compare thoroughly. <- My simple views.
I'm fed-up with half-baked 'guides' and irrational, non-factual and biased/situational comparisons. 90% of the information is valuable and relevant. The comparisons need to be reviewed.

You do not elaborate on Whispering Dawn/EoS cooldowns enough.
Cure III is exceptional and has no draw-backs.
Medica II has functionality in Ultima, Titan, T2, T4, Thornmarch, AK... Specifically, MEDII reduces the requirement of MEDI during intense AoE healing situations. (T2 enrage) Weak HoT = has a use other than "Better range to help heal derpy pugs"

My advice:
Review the original post.
If you wanted a discussion, title the thread appropriately.

Both classes are very balanced.
Fix Benediction activation and we're square, Square Enix.