If you look at the damage taken patterns and their health graph as a resource. It actually speaks more about how well the encounter is designed for healing and how well the raid members executed the fight than anything. Giving opportunity to heal non tanks; no single non tank target took more then 150k DTPS at any stage of the fight or more than their max health in damage for prolonged periods.
If you look at tank healing however (on their kill), the druid contributed a substantial amount which means something else was lost in terms of opportunity cost. The question to ask is: would it have been better for the paladin to focus more on the tanks and the druid to focus more on the raid? Without a doubt those logs prove that paladins can indeed be effective raid healers, but only pushing the most difficult content will show the true pitfalls of mismatching healing strengths between specs.