You will notice there is very little bias towards Tamiflu in this new report.Relenza looks to be on a equal footing.
Oseltamivir and Zanamivir (Neuraminidase Inhibitors)
'Oseltamivir or zanamivir continue to be the primary antiviral agents recommended for the prevention and treatment of influenza'
http://www.cdc.gov/flu/professionals/antivirals/guidance/antiviral_drug.htm