In general, I think teams should be expected to lose to teams ranked higher -- and of SHC's 10 losses, all but one are to teams that are top 15 caliber. That one is to St. Francis, which is far from a bad team, and on the flip side, SHC has wins over O'Dowd and SI.
Two of the losses are to top teams in Oregon, and I think that just looking at losses as a definitive measure of a team is a mistake, because it depends on who those losses are to.
That said, most rankings and seeding committees don't take strength of schedule/good losses as seriously as I think they should, so though LyRyan Russell has certainly prepared his team for postseason with this schedule, he may find himself on the road against a team with a better record but not really of the same quality.
So there are two realities here: on the court and on paper (administrative/arithmetical). On the court, SHC is obviously a very good team, and fully healthy, can compete with pretty much anyone in Northern California. On paper, the 10 losses will confuse those who don't really take the time to see just how good South Medford and Oregon City really are, for example.