Having read a post on BriSkoda, it would seem that JBS is the issue, there seems to be a lot of praise for CC.
I have no experience of any mapping, apart from a very short experience of SC, which I felt detracted from the car drive-ability, others like SC.
Just nice to read up on various tuners, and CC seem to get a deal of bad press, but so do all tuners. I guess CC company name is a bit mis-leading, as their Stage one is Generic.
Do the research and reading and make your choice.