Re: Help evaluating a resto druid
While I can't look at your parse right now, I *can* say that the changes from 4.0 onward have had a drastic impact on how Resto Druids operate. Lifebloom is now a single target spell, except when in ToL form, and is the primary underpinning for the tree's mana regen and efficiency gimmicks (even moreso since 4.0.6). Lifebloom procs Replenishment and now is the only heal that procs Omen of Clarity. Nourish and Healing Touch (and Regrowth now, as of 4.0.6) casts refresh the Lifebloom timer on the target. Symbiosis (the Resto Druid mastery) raises the healing of a given spell cast against a target with a HoT already on them. Basically, the mechanics in place for Druids heavily enforce single target healing right now with splash healing from WG, and Rejuv when appropriate. This is not to say that raid healing is out of the question for Restoration, but it bears little resemblance to the Restoration Druid you may remember in ICC.
It simply makes the most sense, for the sake of efficiency, to roll Lifebloom on someone you know will likely be taking consistent damage, so that you get the benefit of Replenishment and OoC procs throughout an encounter, and the mana expended to cast Lifebloom actually does some healing, too. Wild Growth is a "smart" heal, so it picks the 6 people at lowest HP in range of the target (I've even had it ignore the person I actually targeted with the spell, in favor of others, even pets, who were at lower health), and the best hpm returns on Rejuv will come from putting it on those affected by WG, for the bonus healing from Symbiosis.
The general consensus of the "experts" on Druid healing is that Nourish is a very niche spell at the moment, and therefore almost useless in practical terms (too small in size, too slow, not efficient enough, and no extra utility not brought by HT). Healing Touch is just plain better for most scenarios where a direct heal is needed, Rejuv is better for pretty much anything else. Regrowth is monumentally inefficient, the Druid equivalent to Flash of Light, so a Druid who wasn't making much use of either of those is actually "doing it right", *particularly* if they were having mana problems. In fact, Rejuv, Lifebloom, and WG (not necessarily in that order) *should* be the top 3 spells for raid healing with a Resto Druid.
Overhealing could be produced by any number of things, but with Restoration Druids there's a good chance that the people they put a HoT on were healed to full by another healer before the HoT's duration completed, or the Druid put HoTs on people pre-emptively who didn't end up taking damage (a common one is Lifebloom on a tank with frequent tank swapping, and the Lifebloom target ends up being the one not getting beat on). As for some people not getting much healing from the Druid, it may be simply that another healer was keeping them at or near full health, to the point that a) WG never/almost never picked them, and b) they never/almost never looked like an attractive target for Rejuv, either (i.e. their health was too high to warrant the mana expenditure). The next option, Nourish, is slow, weak, and not terribly efficient to cast on someone with no HoTs on them.
Possible solutions include clearly defined healer responsibilities, which you alluded to. It may also help to make sure all healers are using addons that tell them if someone has a HoT on them from another source. Bonus points if that addon actually indicates the type of HoT.
All in all, if its a player brand new to the raid, and his/her first time seeing the encounters, I'd definitely expect lower performance, and more mana inefficiency. As the player learns the ins and outs of who will take damage, how much, and when, both their performance and their efficiency will improve. Based solely on what you described, it sounds as though, at least in theory, the player you have is doing things the way they are supposed to as a Restoration Druid.
A good resource to ask questions regarding Restoration healing practices and theorycraft would be plusheal.com, a healing forum. They're pretty helpful with questions, and usually give reliable and informed answers.