Are shaman like anti-paladin's and paladins in the sense that higher int/wis mean more effective prayers?

Though I am not sure thats exactly how it works with paladins each race def has different strength wraths I have noticed.

and if it is like anti-paladins is it int or wis that determines prayer strength?

In CF terms, there are distinct differences and benefits between wisdom and intelligence. The strength of supps/spells are dependent on char level.

However in most AD&D games, priests are associated with wisdom, while mages are intelligence.