New Delhi, Sep 27 (PTI) Actor Imran Khan finds the negative attention towards his contemporary Ranbir Kapoor nonsensical after the failure of the "Bombay Velvet" star's last few films.

Ranbir, who had placed himself at the top with back-to-back hits like "Wake Up Sid", "Rockstar" and "Yeh Jawaani hai Deewani", has been at the receiving end of the criticism after his 2013 comedy "Besharam" and this year's releases-- "Roy" and period drama "Bombay Velvet" failed at the box office.

Imran, who started his career around the same time as Ranbir, slammed the critics and said they should judge an actor on the basis of his calibre and not on the number of flops.

"It is the most ridiculous thing in the world because anyone who has been working in the industry for a while should have this much knowledge that every actor will have a few hits and some flops. Did not Salman (Khan) have any flop? SRK, Aamir and Hrithik Roshan also had flops. You should evaluate a person on the basis of his or her calibre and ability.

"It is stupid because if you look at the calibre of an actor that Ranbir is and say that his two films didn't work and he is done, then you are a fool and you have no point making films or writing about them," Imran told PTI.

The 32-year-old actor said he is sure Ranbir will bounce back and shut his detractors up.

"Next year he will give a great performance and a blockbuster and they will look like a fool. If you have seen an actor's two-three films you know how he or she acts so you cannot write them off," he said.