I just played NG 1 ( the original, not black nor Sigma) and NG2 back to back. There's little difference with the fluidity of the control response with NG3. Also, NG3 on hard difficulty also just as difficult as NG1 on hard. People should actually retry the previous games before getting all like '' it's too different!!! ''.
As for me, I seriously don't miss the lack of checkpoints, often 10 minutes before bosses who can grapple you and chew off 76% of your health. I also don't miss the useless inventory system and the potions you would chug at lightning speed to assure your survival. Ninpos? They were all the same, except the one with the firing wheels that sucked anyways. Did you really switched between your Ninpos? Come on, don't lie, you didn't.
No seriously guys, go play the old NG's again. Not the Sigma version, the -vanilla- ones. You'll see that NG3 isn't all that bad.