Again, why are you not celebrating? If Broberg is only going to work in a system, that’s he clearly isn’t worth a lot out of that system.
He could still be a player, but sure it could certainly be a system's thing.
The Oilers D shut down basically all 4 playoff opponents even Florida the longer each series went on, Florida for example was averaging 2 goals/game the final 4 games of that series, Vancouver was even below that, LA was below 2 the last 3 games of their 5 game series, Dallas was right at averaging only 2 goals per game in the final 3 games of their series. And Broberg didn't play in half the playoffs.
Now either all the Oilers D got magically that much better and were also some how a top 6-7 defensive team in the regular season from November 12 onwards coincidentally ...
Or Knoblaugh/Coffey's system was doing some serious, serious work. Because it's not like Stuart Skinner is a Vezina candidate, so that can't be it.
Florida is much the same too, they don't have some all world D corps, Ekblad was honestly pretty poor in the Finals, it's Maurice's system that overall gets results. They'll be good again next year even though they lost some big minute guys on their back end, because they'll just keep cycling new guys into that same system.