This article will explain why your source code will appear different in the reports.
SPCAF performs the analysis of your customization without access to the source code by de-compiling the solution.
Some coding constructs which look different in the source code e.g.
using(SPSite site = new SPSite(url)){
...
}
and
SPSite site = new SPSite(url);
try{
...
}
finally{
site.Dispose();
}
get compiled to the same intermediate language (IL).
For this reason, it is impossible for SPCAF to retrieve the exactly used source code, upon de-compilation.