true..Sultan dialogues said it all..
RK seems to be ruined beyond repair..after all his nonsense and violent,sadist,mad behaviour-in his eyes he got Madhu-than could not trust her so took her test,asked her to die for him,Madhu agreed and accepted death to win his trust(even if for different reasons),he said now that you again seemed to leave the world for me-earlier in metaphorical way and now literally which is a step ahead than before so ok i trust u and i own u and i decide to have u so dont dare to do something to u or i will do something to u..bcoz only i have right on u and not u..than even though he says he trusts and all, his insecurity and treating Madhu as a "thing" which he wants only him to have or like a "toy" which only he wants to win comes up with dialogues like"tab mujhe lagta hai mein jeet gaya aur vo Sultan haar gaya"..unfortunately it does not end there and he goes some invisible steps up of a building named "beyond disgusting" where he was anyways standing on the topmost floor !..he accuses her,again humiliates her ,accuses her character in front of tons of people and still drags her with him becoz no matter how dirty this toy is in his view,he will only have it as otherwise his ego would be hurt and he will loose!only if he knew he lost it a long time back!!
Frankly it is not Madhu he doubts,it is his own personal problem nothing to do much with Madhu,,he knows how he is and how much Sultan is better than him in Madhu's case and thats why he in his heart cannot believe Madhu will choose him,..till the time he was forcing Madhu it was still fine,but now seeing her come to him in her own will is indigestible and kind of wishful thinking on his part..therefore the trust never comes truly..What you know you do not deserve, you will always be doubtful about having it and be scared to loose it..enough on Rk..he is just so pathetic that I cannot help but get mad on his character..
coming to Sultan-it was again a relief to see Madhu-Sultan bonding..even though he is a gangster and takes shit from no-one and moreover is not used to take shit from anyone, takes nonsense in front of all and still is not bothered about his but Madhu's reputation and respect..as you said his dialogue was enough to show RK and everyone where he stands,,he even takes a punch from him and does not kill him or beat him badly which by the way he is very capable of because he is a gangster and can handle dozens of bodyguards with his bare hands!..but no he chooses to again respect wishes of Madhu and leaves quietly on her insistence..again a big slap on RK's character..he is not even comparable to Sultan in terms of character!..