The 'Glee' actor revealed that in his opinion, the 28-year-old pop star's acting stint was ''very natural.''
He told The Sun: ''From what I saw of Cheryl, adlibbing her part in our film, she was great at it. Very natural.''
He said: ''With the US 'X Factor' thing, I'm sure Simon Cowell had his reasons, but I think she would've worked great.
''If I judged on a talent show I'd want to be just like Simon Cowell.
The actor - who plays teacher Will Schuester on his popular television series - confessed that the music mogul behaves in the same way he would if he was in the position.
He added: ''I think people need to hear the brutal, honest truth. I wouldn't dress it up nicely.
''I'm not sure if they could handle that from Mr Schue, though!''
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