I'd take Pettersson over Matthews any day, kid has heart. 16 points in his first playoffs... As you mentioned one playoff run doesn't put him there, then by your logic Matthews has had 4 tries in the playoffs.....and his career high is 6 points. If anything Matthews hasn't proved that he can make an impact in the playoffs at all.
Pettersson > Matthews
I respectfully disagree with your statement of Pettersson over Matthews for several different reasons.
Offensively
Matthews, has been over a ppg for three consecutive seasons. Pettersson has yet to reach that.
Matthews was
first in the league for even strength goals,
third in the league for total goals. Pettersson was
25th for total goals and
29th for even strength goals.
Matthews was
9th in the league in points, and
14th for point per game. Meanwhile Pettersson was
26th for point per game, and Elias Pettersson was
22nd for total points.
Even strength points: Matthews had 55 which was ranked
8th in the league. Pettersson had 42 which was ranked
34th league wide.
Offensively, Matthews is a more dynamic and dangerous threat. Mind you Pettersson is great, he isn't there yet as you can see above, I've shown numerous different stats. I'm not discrediting Pettersson by any means as I do think he will be a top 10 player for a long time. I
personally believe he is more comparable to Aho, Barzal, at this point and time then he is to Matthews, Eichel.
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Defensively, he is good admittedly, yet I do not think the gap defensively is as large as people make it seem.
+/-, obviously not a great stat indicator because of linemates and such, but it does have perks. Both had excellent +/-, Matthews was +19 leading the leafs by over +5, and Pettersson did very well as well leading his team with +16.
Physicality, Discipline, Blocks, etc - Both players are very disciplined players and will not take stupid penalties which can cost a team a game. Both will compete for the Lady Byng on any given season. In terms of physicality, Pettersson uses his body more and will hit more often then Matthews. Vancouver plays a much more physical style then Toronto, which is more suitable in the playoffs. Matthews blocks way more shots then Elias Pettersson. Pettersson had 42 while Matthews had 60. Matthews had more takeaways then Pettersson. He had 78 takeaways and Elias Pettersson only had a whopping 36.
Miscellaneous - Matthews is a way more dominant face-off man and it isn't even comparable. Matthews had a 55.5% meanwhile Elias Pettersson had a 41.8% face-off winning percentage, while having taken way less face-offs.
Neither Kill Penalties. Both play a lot of minutes on the power play. Matthews plays more total minutes though.
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I really don't see an argument at this point and time for Pettersson over Matthews right now, and here are my reasons why. I do like both players a lot though. In my opinion both will be top 5 players in the league along with Mcdavid, Mackinnon and Eichel/Draisaitl.
I hope you can take the time, to read my reasons and thoughts..