Riots: nobody does it cheaper than France

at least according to Nicolas Sarkozy,

“With regard the French G8/G20, even if I can’t confirm the figures that you are talking about in Canada, I can say that in France they will be 10 times less”

Let’s compare two events in both countries where there were riots. Specifically, Canada’s G20 in Toronto and France’s 2005 riots.

Metric Canada France
Cost $930 million €200 million
Municipalities affected 1 274
Cars damaged 3 8,973
Arrests ~900 2,888
Deaths 0 2
Duration (days) 2 20

What is the appropriate cost for G20 summit security?