From what I understand, the lower pixel (density) count cameras are actually not more forgiving. Although it does not seem that way, the higher MegaPixels reveal user error mo beta.
Better hand held technique and higher shutter speed will help with any camera. I had to use a MonoPod or TriPod when I first got my D7000 and D5100. My hand holding improved so much with both cameras that the transition to a 36MP D800 has been easier.
One other factor: I think Nikon reduced in-camera sharpening to mask moire at high ISO. Someone already suggested going to Picture Control.