Resto druids lack in the CD department. ToL is -good- but not as good as Spirit Link, GS/PW:B/PS...
But are otherwise the BEST healer in game -- reactive burst healing is not typically better than plan for damage/plan your heals over time.
WoL top rankings would be happy to back me up, check em out.
And in pvp they have many tools to survive, better than most other healers, especially in the cc/escape department, so it really comes down to skill.
~Soraka... is like a PALADIN... mostly direct heal, some cheesy aoe dmg, and can return mana to team.~