I somewhat agree with DHF. Panarin could've been of greater use to us if he wasn't paired with Kane. That 2nd line got all the easy offensive zone minutes, so they didn't have to utilize Panarin's biggest strength, his skating 1 on 1. That's especially true when Kane is just as good, if not better, at skating the puck up ice.
If we had moved a guy like Kane to the top line (and kept Panarin at 2LW), we would've had a much easier time skating the puck through neutral ice and being able to set up plays in the offensive zone. Q didn't want to separate the two, so Bowman swapped Bread with a guy who's known most for his north/south style of play.
Having said that, Saad looks like a guy on a mission this year. Scored a hatty in his first regular season game and scored another in his first preseason game. Panarin's numbers will take a slight dip without Kane, so the two players will be neck and neck in points this year (I have Panarin winning that comparison, but more of those points will come from the PP and with easier minutes).