You'll no doubt get people slagging you off for saying that, but it's pretty much spot on in my experience. The qualifiers and friendlies are different these days as it's typically just the proper England fans that go, but these "local" tournaments attract a ridiculous amount of dickheads.
I've been abroad with both City and England, and the atmospheres are miles apart. With City, it's been much more lighthearted and good natured. The songs are generally funny and positive, and everyone looks like they're there to have a good time. Probably more what it's like to be with Sweden, Ireland etc.
But that's just not been my experience with England at tournaments - there's usually an air of overall moodiness and intimidation, as well as a sense that it will inevitably kick off. Maybe it's because there's no real sense of camaraderie or "community" between the different groups, but the atmosphere is just generally more negative.
It's certainly not everyone, but as always there's an element of dickheads that spoil the fun for everyone else. Even in Brazil, a mate of mine said the only knobheads he encountered during two brilliant weeks in Rio were groups of other English lads; mostly middle-class toffs (in his words) who thought being a football fan meant you had to act like a twat.
Take the fighting out of it, and the England fans at these tournaments look, sound and behave exactly like they did 20-30 years ago. And then we wonder why the rest of the world still looks at us and automatically thinks "Hooligans". I'd rather stay as far away from England games as possible these days. I'm sure there must be more fun to be had following other countries at these tournaments.