Bear in mind that the EU side of the pond has a much higher quantity of ranged than the NA side (or at least this was the case last time I played). As a result, they also have a higher population of good ranged, which can be suicidal to charge.
The handful of times I've played EU1 (not too often, since I tend to teamkill a lot with a high ping), there were large balls of 10-15 ranged players, which were very difficult to approach.
