Eurosport commentators (except for Frew) always do that. It's annoying. I like Mats but he tends to ignore obvious declines in certain aspects of a great's game, and instead focus on the one tweak they made to stay competitive, and use that as an indicator that they're better.
For instance, if Roger is using more variety, attacking the net more, etc... he's better than ever. Even if the baseline monster from years past was a vastly superior player to the current version.