I was very deep into .NET until recently but somehow I didn't know this existed. Looks like C# with extra Linq-to-SQL syntax; I guess it's a DSL made with Roslyn for ERP jobs? I wonder how they picked the name.
The compilers you get for both c++ and c are the best of any compiler. Clang is better than anything I have used in terms of the amount of options and features it has and also how polished it is
Only thing that goes for C++ is that it has acceptable (not straightforward) C interop.
I don't like C# and X++ because the language surface is huge but if you use a limited subset than needles to say, very useful and handy languages too.