After 3.1, I've been trying to use SoC since the Judgements from SoB hit like a dry towel. Eventhough SoC hasn't changed, compared with the increased damage on Crusader Strike and Divine Storm, AND the added Exorcism, our burst wouldn't change much compared to use SoB pre-patch. The only difference would be is that I don't hurt myself.
I haven't played PvP yet in 3.1.1, so I know our burst is less because we lost Exorcism again (gotta love Blizz putting our hopes up, and then bashing it back into the ground). Although I'm pretty confident that SoC is the PvP command now, simply because it's burst is higher, you can control when you want it to crit, and because it doesn't hurt yourself.
So far, in 3.1, I haven't had 1 other Ret Pally that used SoB defeat me in a 1vs1 duel (Durotar duels ftw).