A Priest & Lock combo really shine in BG's where multiple SoC can quickly drop groups of players, but not so great in Arena's where the priest can be focus fired down pretty quickly.

Shamans are great in Arena's where bursting down one or two players has a major impact on the game, but not so great in BG's becuase of a lack of AoE and the reliance of being placed in the same group to be effective.

Vyndree's point about not being in a group reducing Shaman's effectiveness in BG's (or anywhere for that matter) is totally valid. Stacking grounding totem is our number 1 way of mitigating spell damage (apart from wearing +resilience gear). Stacking healing stream is number 2.

Cheers,

Stealthy