Hmm.. maybe most of you guys play battle, because I play siege, and most of the time prefer NA because it seems much more friendly.
Often enough on EU, if I accidentally hit a teammate whilst battling an enemy they will later revenge-attack me. And I certainly see quite a lot of intentional team-attacking, along with revenge tks, and endless, endless polling. Accidentally tks seem very often to result in kick/ban polls almost immediately after. I once leech-reporting some naked guy who had been running around spawn punching those attack dummies for quite some time, and he almost immediately put up a ban poll on me for 'abusing QML'. Lots of polls.
It is true that there seems to be less conversation in general, probably as has been mentioned because of far more prevalent language differences. For that I am supremely grateful, because if the playstyle and endless polling is any indication, EU is full of assholes.
Now, I don't think there is any innate difference between EU players and NA players - it's simply that the NA servers are better policed. EU servers need it just as badly; they just don't have it. NA admins don't put up with intentional team-wounding, with revenge tks, and all that nonsense. People who like to do that either know to stay away or have already been banned.
It's unfortunate that fallen for this NA 'badmin' myth, which I have never seen in all my time playing there. What I do see are some cases when one clan-member is kicked/banned for whatever legitimate reason, and then the rest of his clanmates spam chat with heckling and threatening the admin, challenging the rules or the admin's right to enforce the rules or whatever else - often ignoring whatever explanation is given and continuing with the heckling, and often enough coming to complain about it on the forums. (I'm not naming any names, but you can probably guess some of the clans I have in mind.) And if the admin is brave enough to mute or even kick those who refuse to desist in this, as one would expect they make it all that much uglier on the forums.
Effective admining simply isn't feasible if an admin has to justify every ban with an extensive justification and the following arguments via the forum. I'm glad that most NA admins are able, much of the time, to resist the temptation to try. But.. don't be mislead by the trolling morons who claim admin abuse just because their friend got banned for being an ass and breaking the server rules.