‘Sirrah! I will not bear these braves of thine’
In this context, Hortensio is arguing with Lucentio and called him sirrah. Those two characters are actually rich people disguised as teachers.
A term of address used to inferiors or children to express impatience, contempt, etc.
To my understanding, since both of them are teachers, sirrah is not appropriate to use in this context because Lucentio isn't actually inferior to Hortensio, rather they are of the same rank. Am i correct?