I am not sure if the issues are different. I do know that in signing up for old age security, the guaranteed income supplement, and the Canada Pension Plan, all of that, language is an issue, especially for people who don't speak English or French. I've looked at the data about the take-up rates for these programs, and they do differ for cultures or for the north of Canada, for aboriginal communities.
I don't recall there being an English-French issue. I do know that complexity and transparency.... I assume that those are comparable in English and in French, but I don't know.