So I'll try to give some answers for the german scene or better for myself. But I've got to say, that I'm probably not the best person to answer the questions, as I'm much younger than other german rare soul fans. For example Marc Forrest, who started collecing in the 80s, I think.
Yes there is the influence from the UK scene (Speaking for myself now). I started listening to Soul Music at the age of 17, after getting interduced to this music by some Mods, Skins and Scooterists in my town. I was hanging around with those guys, who listened to Reggae, Beat, Punk and Soul. Someday one of the Skins said: Hey Martin, are you only interested in Northern Soul, now? I realized, yes, it's simply the best music for me. My first records were made by Kent and Goldmine, so yes UK influence.
But I still feel influenced by the UK scene, and that's not too bad.
You should hear, what our parents are listening to, terrible! But they are about the age of the older Rare Soul Fans.
This year, I've been to UK for the first time. I was at Prestatyn, which also was an influence for me.
I think, many germans are very interested in UK-playlists, and UK-DJs. That's why they are invited to nearly every bigger Allnighter or Weekender. Over the next 4 weeks there are about 10 UK-DJs at german events.
In Germany there are simply not so many punters as in the UK, and the networks are not so good to get on records. So again, the influence via dealers from UK.
The question about the own culture and identity is very difficult to answer, although I'm studying european ethnologie, and probaly should be able to make a cultural-analysis and compare them, but perhaps after my exam, or for my exam!
What's better? Probably that there is no "scene politics", as far as I can see. But this has something to do with the number of soul fans, and everybody is just happy, if there is an event. We don't have to decide where to go on the weekend, normally.
Martin