Even that's not necessarily so black and white, however.
For example, here's the top parse as DPS for BOTH WHM and SCH on Eden Prime (same run, they ran together):
https://www.fflogs.com/reports/fmWKC...pe=damage-done
While the SCH does have higher healing here, note that the SCH is still parsing 46th percentile healing, whereas the WHM is parsing 9%. One might argue that this is a tradeoff where SCH has an advantage...or one might argue how the WHM had 53% overheal (as compared to 35% for the WHM). Another argument might be that this is strategic, focusing entirely on oGCD healing and pure weaving on the part of the WHM (here roughly 75% of the SCH healing was oGCD or instant [hardcasts being 5 Succors], and roughly 82% of the WHM healing was as well [hardcasts being literally one Cure3 and two Medica2 casts]). (Note that these were all hardcasts, as all usage of Swiftcast by either player was added to their primary damage ability.) Like I said, to put it matter of factly is, IMO, pretty wrong unless you have some serious backup to support that.