Is it 2013 already? Time for the yearly debate;)
The mechanics for opposed rolls are a bit on the clunky side.
This is what the above says:
the hider succeeds with a normal success( 1 level of success ), the spotter rolls a special success(effectively 2 levels of success). As the spotter rolled a better level of success, he wins the opposed roll.
However, he can't reap the benefits of that special result, as the hider's success reduces his result by one grade.
Urgh.. I don't know if that made any kind of sense...
I recommend just using the blackjack-method. It's quickest and easiest, at least for me.