Why did they make Bane so intelligent in Dark Knight Rises when he was dumb as a stump in the animated series and Arkham Asylum?

Why did they make Bane so intelligent in Dark Knight Rises when he was dumb as a stump in the animated series and Arkham Asylum?
Why did they make Bane so intelligent in Dark Knight Rises when he was dumb as a stump in the animated series and Arkham Asylum?
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