Wherever numbeo and expatistan get their data, it's utterly hilarious that the summaries rank San Jose CA about the same as Valanecia/Alicante Spain. Let me just say, there is an absolutely ludicrous error somewhere.
Yes, in your interpretation what that data means.
Likewise Spanish food prices are inflated on those sites which you can confirm by looking at mercadona.es which is a mid-high end grocery store in Spain.
But mostly: Valencia and Alicante have huge populations of retired working class British people. There is no way on this earth a retired working class British person could survive in San Jose let alone thrive.