That's the beauty of it. While Tkachuk doesn't look as good this year yet (making more mistakes than usual) and while I have zero problem with anyone saying Gio has been our best player (absolute beast), Tkachuk has undoubtedly still been our best forward and there's literally zero evidence to suggest Gaudreau or Lindholm have been better.
Monahan and Lindholm don't have PPG seasons so far without Gaudreau.
Tkachuk, as well as he's played, has not been able to lift his line mates to that level.