It was a midweek game that we only won by 4.
If that gives you doubt, I don't know what to tell you. Find another team in the country that's undefeated in the midweek.
Hell, let's look at the only teams in the country ranked above us, UCLA and Oregon. Both have a loss to a team 60+ in the RPI, and a team 100+ in the RPI. Our worst loss is USM at 50, with the 5 conference losses all to RPI to 25 teams.
There is nothing that should be giving you pause about our performance against inferior teams. What we do need now is show out against another clear regional host, which we have several chances to do in the coming weeks.