Cross Class Skill Question

[Canadane]

Thank you kindly! I'd heard that at 60 the exp buff was greater, but maybe I was wrong.

Indeed you were misinformed.
As for the details, it's a static bonus you receive. The difference in your levels makes no changes. From levels 1-50 you'll receive 200% bonus, and from 51-60 it's a 50% bonus.

Happy levelling!