Random November 2013 date. LAX-HKG return trip.

S - USD $998.57
V - USD $1148.57
E - USD $1898.57
W - USD $4882.57
I - USD $6291.57

$6291.57 - $4882.57 = $1409 difference between W and I fare.
Or roughly USD $700 per way. So in your case...yes, it is slightly cheaper
but the catch is...you must have at least 70% of the AM's prior to purchasing extra remaining blocks of 2000 AM / USD $60.