Before the season began, everybody talked about Washington's 5 game stretch that included LSU, Stanford, Oregon and USC. Little did we know that Arizona would become an offensive supernova so quickly under Rich Rodrguez, and that Oregon State would rise to a top 10 ranking. Simply put, Washington might have just survived the toughest 7 game stretch in college football.
So you have to view the stats through that lens - you have to acknowledge that right now, Washington has faced the toughest schedule in the country. Simply put, Cal is the (at best) 7th best team Washington has played so far.
Washington's defensive performance against Stanford is truly mind-boggling. The results from that game can only come from a perfect storm of a defense playing their best against an offense playing their worst. Beyond that, Washington actually held their own pretty well relative to how Oregon typically destroys a defense. They made some adjustments to slow down USC in the second half, and they bent but didn't break against Oregon State. The only real outlier was getting torched against Arizona. But the Wildcats have been putting together outlying performances all year, so I dunno. Either way, I don't think Cal has the necessary stuff to duplicate what the Wildcats run.