is there a problem if I don't setup google analytics in my website?

I have read lot of articles describing use of google analytics but I have not added it in my site.

In Cpanel I can check all things like stats, unique visitor etc and in google analytics its almost same but if I want sponsor for my site then is it necessary to have google analytics? or can cpanel stats be shown to sponsor?

Thanks for reading! I hope I get an answer!