Actually they followed their coach from Lyon, so I wouldn't say that you necessarily have to move up to NA to win... plus MF and Patrice were training in Lyon before too, so I would say that the location isn't the main issue. But a change of scenery can be needed I agree.
A lot of Russian coaches are based in Michigan (or in the US). But then again if you speak of "style" and "taste", I am not a big fan of Igor's choreo, or Marina's... all of that is subjective.
But when you talk about skating skills, Russian couples like to skate BIG, and when you are as good as Pavel it's very nice to watch, but for others it could come across as sloppy, and combined to the Russian style, it's just not doing it for me. But then again, it's how you've been teached your whole life, and it's hard to change...
I feel like I'm criticizing a lot the Russian couples, but no : when you have so many talents, you work like hell to keep them in contention. You don't have to follow everyone like a sheep, but still.
This is why I like S/S Skating Skills.
The way you skate tells a lot about where you're from and it's very interesting to compare skaters with this in mind.