I take Craig Button's exuberance with a grain of salt. But when he says Dahlin's ceiling is the best since Denis Potvin, who was drafted 45 years ago, that's notable.
Several folks project Dahlin's ceiling at Lidstrom. Even more folks project his ceiling as better than Karlsson or Hedman or Ekblad.
Even if different folks draw the line for "generational" differently, someone somewhere has projected this kid capable of achieving it.
And no matter the label, I believe.