I'm sorry for not making it clear, but the measuring stick for this team is playoffs success.
And with regards ro those results, they've been mediocre. Even what regular season success they've achieved is limited to a few more points than normal at the end of the year. They still haven't won the Atlantic division, the Eastern Conference, or the President's trophy.
I mean, a team that doesn't win anything in the regular season, and routinely goes out early in the postseason, is about as mediocre as it gets in my books.
But we all measure success differently I guess.