No, you read that wrong. The title is just a crowd pleaser. It's fucking great. Unfortunately in their wisdom Team Ninja made the Master Ninja Mode an unlockable. That actually was unforseen. I'm very fecking surprised.
Anyway to unlock it I have to play through the game twice, once on Hard then on Very Hard. I'm about two hours in and closing on half-way through on Hard. Though it's quite obviously harder than the original I'm absolutely walking through it. I've died three times, twice was me quite literally walking into people's attacks. The last time I was caught unawares by a new boss attack.
I am pretty disappointed, even though there appears to be lots of new stuff I reckon I'm missing most of it simply because I'm cutting through the legions of hell at the speed of ninja.