Sorry, I can't answer to your question precisely, but for one thing I can confirm you that YES, they are certainly trying to wriggle out of this! I need to travel sometimes using Air France, (lack of other options) and I really lost my respect for that company. Many of their staff is rude to you, and when my boyfriend had all his luggage delayed and had to stay one day without any of his clothes, I asked the lady "how will he stay a whole day without having a shower, having his personal hygiene?"
She just replied in a very angry way "what's the problem, I would!!!!!"
Later on, somebody said we could claim up to 100 Euros for this embarrassment, so we went out and he bought soap, shampoos, and some essentials. We kept ALL the receipts like they said. When we sent them all and asked for the compensation, they came out with an obscure line of the EU regulation where it said you could only claim that until 1 month AFTER the fact! Problem is, we were travelling around for 2 months so we would never guess that!
So, be careful with Air France. Wish you a good luck!!