Say again slowly
Maybe that's because radio nav is a fundamental part of their basic training and they have a high level of investment in that infrastructure.
"Recurrent" training or "differences" training, there is quite a difference between the two. With recurrency you normally end up with some arrogant twit who say's "you don't do it like that ....you should be doing it like this". With differences training you get an instructor who say's "I know you are used to doing it that way but here in Blighty it might be better for you to do it this way"
The instructor with experience and awareness of both training systems has the advantage over the insular bigot who despises a certain group of pilots based on what passport they hold and where they trained.