This seems strange to me. I have trouble understanding the D&D warrior priest as a particularly wise figure. It seems like his job is to bash the unbelievers, heal the allies, or some combination of the above. If anything, I think the cleric that is perceptive, grounded, and offers wise counsel is something of an aberration in the D&D lexicon. Charisma does make some sense.I see charisma fitting some archetypes, but for others, like cloistered clerics, wisdom fits much better.
I would really like to see charisma replace wisdom as the cleric's magic ability stat and wisdom become strictly perception. I know this isn't going to happen in Next, but I atleast would like to see charisma as an optional stat for clerics.