It's difficult to make a direct translation from NZ to French alpine grades. I don't think that your chart is exactly correct, since most of the NZ Grade 3 and 3+ routes I've done would surely be given the French alpine grade D.
For example, SW Ridge on Aspiring (NZ 3+), Linda Glacier on Cook (NZ 3), and North Shoulder on Tasman (NZ 3+) are all solid D in my opinion. No way would these routes be graded AD in Europe. I also did NW Couloir on Lendenfeld, which is NZ grade 3, but I found it harder than the Jager Couloir on Mont Blanc du Tacul which is widely accepted as D.
Your chart seems fairly accurate for rock routes. The W Ridge on Malte Brun is a NZ Grade 3 rock route, and I could see that it would only be graded AD in the French system. Since the rock is kind of shit in the NZ mountains and the climbing tends more to snow/ice routes, it seems that maybe the standard is a bit higher for these routes.
The comparison between TD and NZ Grade 5 seems pretty fair to me for any route in NZ.