Why did they change Banjo's jumping sounds, but not Kazooie's?

In Banjo-Kazooie, Banjo's jumping sounds, "Hoo," "Woo", and "Whee" fit with Kazooie's "Ow, wheeee!" when she helps Banjo jump higher. But in Banjo-Tooie, they changed Banjo's sounds to basically "Huh!" but leaves Kazooie to go "Oh! Wheee!" And that doesn't go well with Banjo's new sounds. They should have changed Kazooie to go, "Ow, huh!" That would have worked much better.