So you'd say someone like Matthews outworks Hyman since he hits more, wins more battles, and dictates the pace/style more. In the Montreal series, for example, Matthews led in virtually every stat that shows "effort" for forwards in that series, I think he did last year too. That's between both teams.
Well, someone like Brown or Hyman are terrible skaters but are generally considered super hardworking, and I personally don't think that they are any more hardworking than the average player, they just look like they struggle so it appears they work harder.