I've just bought a Canon EOS 100D/SL1. I was looking at this comparison and I'm not fully happy: http://www.dxomark.com/Cameras/Compare/Side-by-side/Canon-EOS-100D-versus-Nikon-D3300___871_928 ...
[EDIT: The original main question here was "What is Highlight Tone Priority?" It turns out that Highlight Tone Priority, Active D-Lighting, D+, and Adaptive Dynamic Range all mean the same thing, so ...
What does Adaptive Dynamic Range do to a photograph? How does it do its job? How does it affect the results? When should it be used? Nikon calls this "Active D-Lighting"; discussion of other systems ...