He plays what's needed which makes him better than Vidal in my books.
And there were times when Vidal faded away while that was never the case with Radja. I have a feeling he could play 4 matches per week at the top level. The level of energy inside him is just insane.
As much as i hate his guts, I'm glad to see Radja turn down EPL offers and stay in Serie A. Although I am sure he will be linked again after this performance.