Personally, I see Spiderman webbing up a bunch of chairs in MGS and launching them at Mace for a distraction before just diving in head long. Or maybe bringing down the big scoreboard from the ceiling to toss Mace off balance. And there's also the option of adjusting the webbing to be a super adhesive and having objects stick to Mace or Mace stick to the objects (which would take him very little time to cut through with his lightsaber, but creates an opening). It's not that Mace is going to stand still and let Peter do all these things as much as with his speed and abilities these options are open to Peter.