Jesus did not answer the Pharisee according to the Pharisee's attitude. Instead he answered the Pharisee as the Pharisee deserved, so as to give the Pharisee a chance to get the right idea about God's values.
(Luke 7:39-47) . . .At the sight the Pharisee that invited him said within himself: “This man, if he were a prophet, would know who and what kind of woman it is that is touching him, that she is a sinner.” 40 But in reply Jesus said to him: “Simon, I have something to say to you.” He said: “Teacher, say it!” 41 “Two men were debtors to a certain lender; the one was in debt for five hundred denarii, but the other for fifty. 42 When they did not have anything with which to pay back, he freely forgave them both. Therefore, which of them will love him the more?” 43 In answer Simon said: “I suppose it is the one to whom he freely forgave the more.” He said to him: “You judged correctly.” 44 With that he turned to the woman and said to Simon: “Do you behold this woman? I entered into your house; you gave me no water for my feet. But this woman wet my feet with her tears and wiped them off with her hair. 45 You gave me no kiss; but this woman, from the hour that I came in, did not leave off tenderly kissing my feet. 46 You did not grease my head with oil; but this woman greased my feet with perfumed oil. 47 By virtue of this, I tell you, her sins, many though they are, are forgiven, because she loved much; but he who is forgiven little, loves little. . .