Having 5-boxed groups of both to 80 and pvp'd with them - Shaman's are much better hands down.

Apart from the obvious problem of dealing with AoE fear, the two other major problems with druids are:
1. Having to drop form to heal leaves you vulnerable to melee attacks.
2. Difficult to get melee classes off you since Tyhpoon only knocks back 5 yards in front - Thunderstorm is far more effective.

Druids are fun in BG's and Wintergrasp - they have great AoE in Hurricane and Starfall, but if you get focused you go down pretty quickly. Compare this to shamans that can be self healing for 1K per tic, AoE'ing for 3-5K per tic, and be doing great dps or healing as required to other targets - all at the same time.

Cheers,

S.