One thing I noticed when watching the French disc and doing a few shot-by-shot comparisons with the Criterion laserdisc - and this is confirmed by all five of the screen caps - is that the French DVD trims off a tiny but (to me) unforgivable sliver from the right side of the picture.
I thought it was just me and my crappy television/DVD player overscan, but I just had a close look at the screen caps, and sure enough. There they are(n't).
Guess neither disc is worth owning. Ah, Criterion laserdisc.