Interesting use of the word 'efficient'.
To find, and then confirm quickly, an object so small is interesting. However, without an estimate of 'the ones that got away' it doesn't really say much about efficiency, at least not in the sense which really counts for us - detecting trouble far enough ahead of time to be able to do something about it.
For those interested, this site has updated links to news about near Earth objects (NEOs):
Separate names with a comma.