Mystery of statting and pot gain

Ive just gotten my first 2s adv garb with pot39, and in the guides section i found one formula for cd5cd18cr18cr18, should i use these stats or is there a better version?
Generally how does statting work and how do ppl come up with these steps?

 

I'm too lazy to write everything I know about statting and blah blah blah.
So here's a good reference to learn about how's statting work:
http://coryn.club/guide.php?key=smith
go to statting section

 

oh okay thnx, i got it now