Wisdom and intelligence aren’t exactly the same thing. Intelligence is more akin to the resources at your disposal while wisdom is more like how you apply those resources.
I should also point out that in a large percentage of Zelda games Zelda doesn’t actually have the Triforce of Wisdom for pretty much of the time.
Even if she doesn't have the Triforce of Wisdom, she is still supposed to get it sooner or later. To me the Triforce parts seems rather redundant. Link is pretty much as brave/courageous before he gets Triforce of Courage as afterwards. The only Triforce-piece that seems to make some significant difference is Triforce of Power, even if Ganondorf seemed pretty strong before Link opened up the Door of Time and pulled up the Master Sword.
The post was edited 3 times, last by MVS ().