I be careful if your going to spend money on this one. That's all I can say.
As an addition, the combat is not the same at all. Quick time events and one button combat and kind of unintelligent AI makes for a simple easy game. Not saying that easy games aren't bad, but there is no reward system in Ninja Gaiden III. Previous game you had a huge feeling of satisfaction for taking down on the big boss. Here the big bosses, are quick time events.
I am not telling you not to go out and buy this game, I am saying be really careful with this purchase. $60 is a lot of money to spend on a game like this, even when there is games like this that do combat really good.