i dont think so.
here is my rant on a resto:
earth-shield is close to the best defensive spell in this bracket. used on yourself, you can just run around in the middle of the action (what you shouldnt do as a healer, but a resto could) and it needs 3+ players to down a shaman self-heal-surging him with ES on.
ghost-wolf is nice, but situational. you can use it for FC and following the FC. but the 2 sec cast-time as a resto makes it situational.
healing surge is nice, but nothing special.
purge is nice - as an opener to take away fort-buff and shield or to cancel HOTs on a EFC. but as said before HOTs are not that great on that level and fort is 180 HP - yay, purge is the burst of a resto!
totems are very nice against melee-classes or in the tunnels. hunters or mages though are laughing about totems. and they can be easily destroyed by anything. healing-stream-totem is underrated somewhat, because of its grp-effect, but shamans are missing a good HOT there for.
wind-shear is ok, but 2 seconds is often not enough for a shaman to down someone. we have no burst. and that is exactly, why a resto-shaman is no god mode. my highest crit was around 220 - from a lightning bolt, which you never use in pvp. earth-shock crits for around 140 and has a 5 sec CD. firetotems are a nice extra dot, but far from great and no burst at all. fireshock would be a nice dot, if it wouldnt share a 5-sec-cd with earth shock - so its useful against rogues, but against the rest its a DOT, and we have talked about DOTs and HOTs in this bracket before. i honestly need my white melee-dmg (crits for around 120) to kill ppl somehow fast enough.
so you see: a resto has lots of tools, but almost all of them are somewhat situational. anyway, i think bottom-tier2/top-tier3 seems right for that class, which i love to play.