How does Pertruchio show that he is even more shrewish than Katherina in Act IV scene 1 of The Taming of the Shrew?

In this hilarious scene, we actually see that Petruchio
has so successfully out-shrewed his wife that she takes the role of being reasonable and
trying to calm his anger and rage against the servants. Note how, when they arrive,
Petruchio is quick to berate his servants for not attending him and his new wife
properly. He insults them, calling them "knaves" and "loggerheaded and unpolished
grooms" and berates them for their lack of duty. As Petruchio strikes a servant for
spilling some water, it is Katharina that tries to calm him, saying "Patience, I pray
you, 'twas a fault unwilling." In addition, when he complains that the meat was burned,
Katharina again says "I pray you, husband, be not so disquiet." Petruchio shows that he
is deliberately and successfully out-shrewing his wife, forcing her to assume the role
of a reasonable person and perhaps reflecting her own excesses back to her, so that she
can experience what her former attitude was like to put up with.