If we were to switch Kaprisov and Robertson, my money would be on Kaprisov being over a ppg.
Now, I'm not going to disagree that Pavelski and Hintz (along with the rest of the good center depth that Dallas has) haven't benefited from being on a line with Robertson. However, one would have to be out of their mind to suggest that Rask and Zuccarello are better linemates than Pavelski and Hintz.