It's known that, here and there in his movies, Nithin consciously tries to behave like Pawan Kalyan. In 'Chal Mohan Ranga', he has actually gone a step ahead.
In one of the comedy scenes post interval, he tortures comedian Sathya. In the end, we see Nithin's Mohan Ranga majestically sit on a pile of brandy bottles. All this is staged to remind one of Megastar Chiranjeevi's 'I am waiting' moment in 'Khaidi No. 150'.
Yes, he does imitate Power Star at two places. It seems it was conscious.