i guess most of the reason is we, fans, play quite a lot of this series, so we familiar with the system... i have friend that even think J is hard as he is not used to play this series.. plus, some of the series most difficult enemy (in my opinion) such as enemy from L-GAIM and Aura Battler Dunbine also no longer appear in this series... that just make most of the others enemy share almost similar feature, high HP and strong weapon.. ah~