Issue
select max(sequence#) from v$archived_log where applied='YES';
on the standby then.

Am still not sure about the descrepancy in sequence #s in the query ouput you listed. I would have to test some more.

Switch some logfiles manually, then issue the below on the standby.

select process,status,client_process,sequence#,block#,active_agents,known_agents
from v$managed_standby;

It'll give you an exact picture of what's happening on the standby.