The plus side though is that damage gets more reliably high, i.e. its very unlikely you ever roll a 1 (1/36 = 2.778%) and in 20/36 = 5/9 = 55.556% of cases you get a 6 or 5 rolled.
The more dices you roll the more reliably high the damage gets anyway, though.
Either way yes I would downgrade this to group 3 if not 4. Far less impressive than Tavern Brawler or Polearm Master or Great Weapon Master.
