To be even more frank, no, they don't have a better resume.
You don't seem to recognize the glaring omission from their resume. A section championship. Serra actually has one, SF doesn't. Unless the team plays in the NCS, this omission is of utmost importance.
Furthermore, by your logic, Rocklin still has a better resume than Folsom as well. They split the head-2-head against Folsom, have 2 less defeats, a league title, and beat a Granite Bay team that Folsom lost to.
Yet Rocklin is now watching from home.
Do you know why? They don't own a section championship and Folsom does.
As
@Cal 14 keeps telling people, read and comprehend the freaking requirements. It ain't that hard.
Lastly, once the Bowl games were increased from 3 games to 5 games and then again from 5 games to 13 games -- it stopped being about sending "the best teams". It became about inclusion.
Be real and honest --- there are much better teams than 9-3 Chico and 6-7 Sacred Heart Cathedral sitting at home for the holidays. Probably at least 50 better teams with better resumes (sans a section title).