Hrithik is way too good looking compare to Ranveer and Ranveer is way too natural as an actor compare to hrithik. So how can they replace each other??
Hrithik can't play BBB, similarly Ranveer could never play Akbar. Even Bang Bang n Dhoom 2, I can't see Ranveer playing Hrithik's character in those films either.
I think Hrithik could have done Ranveer's part in "Lootera" better though.