I think it's a difference in philosophy. Some people would rather have a 4th line that is like a soft scoring line (with Petan playing on it). I would rather have a line that is aggressive, and wears down the other team. That 4th line isn't going to score a lot but with some more ice time I think they will get better at getting in on the opposition D quick and grind out a cycle and prevent chances against that way.
Might not be sexy but in the playoffs I firmly believe a 4th line that plays like that, tires the opposition out, and doesn't give up much (despite not producing a lot of offense) is way more useful. I don't want a softer 4th line that scores a bit more but gives more up and doesn't really grind the other team down.
This team is trying to win a cup, you have to build your roster for playoff hockey.
This is where you are wrong. Most people who want to see Petan on there are not saying that because of preference of his style. They want that to get the best results out of the 4th line,
regardless of the style.
I don't care what the "style" of the 4th line is, all I care is -- are they playing outside their defensive zone most of their shifts? Can they stop bleeding shots and chances against? Are they able to establish some amount of offensive zone time?
If a line does 3 of those things, I don't care if they they are crawling on their hands and knees to accomplish that, they are helping the team win.
I love physical hockey with big hits, esp when my team is throwing the big hits. Vegas 4th line has 2 guys who throw hits at a much higher rate than Lemieux does, I would take the Vegas 4th line as my 4th line no problem, maybe even ahead of Petan. Because they throw hits, play mostly in the offensive zone and limit shots and chances against. That however is not true for the "physical" player on our 4th line.
We are allowed to hold physical players to a higher standard beyond "does he hit", just like we hold skilled players to a higher standard than "does he dangle". If your belief is that
"Jets need to have physical players who can grind down the other team" then your position should be that the Jets trade for a guy like William Carrier who plays in that role to great effect, rather than defending playing a specific player who does not seem to be in his depth in that role.