"I'm not sure exactly what "upgrade scheme" you're talking about. That thread was someone asking about free elite upgrades on transoceanic flights. I don't believe that's part of any *A carrier's program, but feel free to correct me if I'm wrong."
If you go further down the thread to post 24 and beyond they get past the op-up focus and onto how hard it is to upgrade into Business First on long-hauls . . . (some even going so far as to call it bait and switch or fraudulent!)