I extrapolated "unless you live in SEA, the network is not one of them" to imply that the connection options from non-SEA airports are not good. But true, you did not explicitly say that.
I'm not at all saying AS is superior than the other airlines at LAX/SFO/SAN, etc, I'm just saying it's viable competitor. When available North America routes are within +/-5 of AS, I think that's good competition.