So about two business class roundtrips credited to AB = one roundtrip upgrade to business class from a paid economy class ticket?
gives u an upgrade for a one way ticket.
Abt. twice a year AB has a double miles promotion, that really pays off.
Yes, last Y-Ticket I bought was abt $700 (RT), then used miles to upgrade. No complaints about availability on AB awards.
Even more attractive for me is to collect to Asia and spend to US. (upgrade OW TXL to LAX/SFO costs 25.000 Miles )