Hatton, better wins with his win over Tsyzu, plus he fought better opposition, didn't try to age out Pac or Mayweather he dared to believe and fought them at their best, yeah he lost but he lost to the best versions of them. Both relied on their size and strength to physically dominate fighters, but I think Hatton had better foot work, I think he was slightly more skilled than Spence, though some will disagree as they think being text book is the same as skill which it isn't.