Hey there,
Our defined quality profile for C# is currently a combo of SonarC# rules and FXCop rules. We would like to eventually deprecate our use of the FXCop plugin when SonarC# rules has closer parity with FXCop rules, but we can't find any sort of "mapping" between the two so that we know which rules we can deprecate the FXCop versions of. It also appears FXCop rules have been broken into multiple rules in some cases -- either way, if a mapping exists and could be shared that would be great.