It's the Atlantic, of course they will take about the U.S. unless eplicitly mentioned otherwise.

Is the French software engineering diploma as rigorous as other engineering diplomas?

In Poland at least you have Physics and Math that you have to pass like on other engineering fields.

And you have to create thesis work that you have to defend in front of jury to get your degree.

I'd expect it would be similar in France.

Many schools in the US also require physics and math for a CS degree. It's not the degree that's at issue, it's professional licensing and regulations.

Well, at least in Poland (and I'm not sure about the rest of Europe) having graduated from an engineering school (a polytechnic) serves as formal licensing, even for classic engineering disciplines, like e.g. civil engineering. So in order to be able to take responsibilities and perform work of a civil engineer, you are required to have graduated from a civil engineering faculty, but have no additional certification after you do. Software development is also thought in polytechnics (among other options) and you formally become an engineer after graduation (though it has no real life consequences) - I'm formally a software engineer myself for example.

It's almost the same in Quebec and I believe everywhere in Canada. Thanks for making this point clear!

That is exactly right. I'm a software engineer in Quebec. I have a degree in software engineering from an engineering school.

I even have the option to have a license at which point I could call myself a profesionnal engineer. This is the same in other Canadian provinces but the engineering license is regulated at the provincial level so there are a few diffenrences.