This is a pretty easy one to answer.
Harkins has not had much of an impact at all to start the year, and getting scored on a 4th line shift is a way to the pressbox. Ask Nic Petan about that. It's a results based league. Thompson still is holding his own 5 on 5, at least not giving up goals.
Harkins is not a better PKer than Thompson. In fact to make that claim is a giant stretch since at no point has he killed penalties on the Jets, so it's not even an argument just a biased hope. That small sample size that holds true for every young player's failure to produce should also apply to vets, if they have early struggles. Thompson was good on the draw tonight. He had a decent PK shift. He didn't get scored on again, which is important for every minute you play on a 4th line. And if you watched the games you would have seen the same thing as me, that Harkins and Ves on a 4th line had some pretty scrambly shifts in their own end. Not real momentum builders. And if you can't see the difference between an even Corsi, with two players playing on opposite ends of the rink, having a determination, I'm not sure what else to add. Do I think Harkins could be a good PKer? Maybe, one thing you have to watch out for is being fast, but not being in position because you are so fast. It's easy for a player to skate themselves out of position on the PK, keeping the box and the seams tight, isn't just about speed. But awareness.
The simple fact that Copp and Perreault have more points should tell you why they are on the PP. None of them have played their way off it. And Lowry has produced on the PP too. This reeks of rookie entitlement. The kid has 1 point this year, let's not get carried away in his impact. There is still some developing to do before he becomes an everyday player. Getting a taste of the action is a good thing, not a bad thing. But the love of non producing young players is somewhat of a hyperbolic diatribe in these parts, with consistency.
Maybe Maurice is a good coach, but the biases towards him aren't so good.