Seems like the argument for Boise is they beat Mira Costa on September 26th.
1) From a quick glance, Mira Costa may not have run their full roster and they definitely weren't anywhere close to their peak.
2) I doubt the committee put much stock into a meet that occurred on September 26th.
3) Comparing speed ratings between NXR Northwest and the California state meet make it look pretty obvious how four California teams got picked.