Your example of AVS NO MATCH
is doing exactly what the test is supposed to do.
It is showing you that Google will allow certain transactions and let the merchant make the decison (assume risk) for the transaction. You will also notice that this transaction is not covered by Google's Payment Guarantee (which is why merchant assumes risk).
A transaction that is covered by Google Payment Guarantee will show:
The link you provided for AUTH DECLINE
(Failed auth) is what you are looking for - re: Google will not let the transaction go through (e.g. VISA 4209, AUTH+DECLINE):