Why SSR Craving for Heroe's Height?

Ace director SS Rajamouli selected Young Rebel Star Prabhas as the hero of his next movie, 'Baahubali'.   He also selected hero Rana as a main villain and Anushka as the lady lead of the film. The common factor to be seen in above cast is their height. As per Rajamouli's tweets, they are 'giants' rather than human beings. 

Why has Rajamouli selected tall heroes and heroine as the cast of his 'Baahubali'? As per some of the analysts, Rajamouli chose them because he might have felt that the subject demanded tall persons as the cast of the film. However, some more analysts are saying that Rajamouli wanted to make another 'Magadheera' kind of film with giant personalities as the cast of the film so as to cross 'Magadheera's records.  Here the million dollars question is 'Can these giant personalities make  'Baahubali' bigger than 'Magadheera'? Apart from Rajamouli's directorial skills, Ram Charan's amazing horse riding skills, his performance, the making values of the film and Ram Charan's great fan following are responsible for the industry hit of 'Magadheera'. We have to wait and see if Prabhas and co. make 'Magadheera' to be forgotten or not.