I don't understand the secrecy in that post at all. It's like saying, "I can do it, you must all be stupid."

Anyway, the list of Skytrax 5* Airlines is very small:

• ANA All Nippon Airways
• Asiana Airlines
• Cathay Pacific Airways
• Garuda Indonesia
• Hainan Airlines
• Qatar Airways
• Singapore Airlines

Virgin's Partners are:

• Air China
• Air New Zealand
• All Nippon Airways
• Delta Air Lines
• Hawaiian Airlines
• Jet Airways
• Malaysia Airlines
• Scandinavian Airlines
• Singapore Airlines
• South African Airways
• Virgin America
• Virgin Australia

Only 2 airlines are on both lists:

• ANA All Nippon Airways
• Singapore Airlines

If I was going to guess, I'd say this was an ANA booking he is trying terribly hard not to talk about.